{"id":384,"date":"2026-06-15T18:54:38","date_gmt":"2026-06-15T09:54:38","guid":{"rendered":"https:\/\/www.risu-japan.com\/drill\/?p=384"},"modified":"2026-06-15T18:54:38","modified_gmt":"2026-06-15T09:54:38","slug":"subtraction-2digit-borrow-once","status":"publish","type":"drill","link":"https:\/\/www.risu-japan.com\/drill\/grade2\/subtraction-written-calculation\/subtraction-2digit-borrow-once\/","title":{"rendered":"2\u30b1\u30bf\uff0d2\u30b1\u30bf\uff08\u304f\u308a\u4e0b\u304c\u308a1\u56de\uff09"},"content":{"rendered":"<p><!-- body-start --><\/p>\n<h2>\u304f\u308a\u4e0b\u304c\u308a\u306e\u3042\u308b \u5f15\u304d\u7b97\u306e \u3072\u3063\u7b97\u3068\u306f<\/h2>\n<p>2\u6841\u306e\u5f15\u304d\u7b97\u3067\u3001\u4e00\u306e\u4f4d\u304c\u5f15\u3051\u306a\u3044\u6642\u306e\u7b46\u7b97\u3067\u3059\u3002\u96a3\u306e\u300c\u5341\u306e\u4f4d\u300d\u304b\u3089\u300c10\u306e\u307e\u3068\u307e\u308a\u300d\u3092\u501f\u308a\u3066\u304d\u3066\u8a08\u7b97\u3059\u308b\u300c\u304f\u308a\u4e0b\u304c\u308a\u300d\u3092\u5b66\u3073\u307e\u3059\u3002\u8db3\u3057\u7b97\u306e\u300c\u304f\u308a\u4e0a\u3052\u300d\u306e\u9006\u3067\u3001\u304a\u96a3\u304b\u3089\u5206\u3051\u3066\u3082\u3089\u3046\u30a4\u30e1\u30fc\u30b8\u3067\u3059\u3002\u501f\u308a\u3066\u304d\u305f\u3053\u3068\u3092\u5fd8\u308c\u306a\u3044\u3088\u3046\u306b\u3001\u5341\u306e\u4f4d\u306e\u6570\u5b57\u3092\u659c\u7dda\u3067\u6d88\u3057\u3066\u66f8\u304d\u76f4\u3059\u30e1\u30e2\u306e\u7fd2\u6163\u3092\u78ba\u5b9f\u306b\u3064\u3051\u307e\u3057\u3087\u3046\u3002<\/p>\n<h2>\u3072\u3063\u7b97\u306e\u30eb\u30fc\u30eb<\/h2>\n<h3>1. \u4f4d\u3092\u305d\u308d\u3048\u308b<\/h3>\n<p>\u4e00\u306e\u304f\u3089\u3044\u3068 \u5341\u306e\u304f\u3089\u3044\u3092\u3001\u305f\u3066\u306b \u30d4\u30c3\u30bf\u30ea \u305d\u308d\u3048\u3066 \u66f8\u304d\u307e\u3059\u3002<\/p>\n<h3>2. \u4e00\u306e\u4f4d\u304c\u5f15\u3051\u306a\u3044\u6642\u306f\u300c10\u300d\u3092\u501f\u308a\u308b<\/h3>\n<p>\u4e00\u306e\u304f\u3089\u3044\u304c \u5f15\u3051\u306a\u3044 \u6642\u306f\u3001\u5de6\u304c\u308f\u306e \u5341\u306e\u304f\u3089\u3044\u3092 \u659c\u7dda\uff08\uff0f\uff09\u3067 \u6d88\u3057\u3066 1\u3064 \u6e1b\u3089\u3057\u305f \u6570\u3092 \u4e0a\u306b \u66f8\u304d\u3001\u4e00\u306e\u304f\u3089\u3044\u306e \u4e0a\u306b\u300c10\u300d\u3092 \u304b\u308a\u3066 \u304d\u307e\u3059\u3002<\/p>\n<h3>3. \u4e00\u306e\u4f4d\u3092\u8a08\u7b97\u3059\u308b<\/h3>\n<p>\u304b\u308a\u3066 \u304d\u305f\u300c10\u300d\u3068 \u4e00\u306e\u304f\u3089\u3044\u306e \u6570\u3092 \u5408\u308f\u305b\u305f \u6570\u304b\u3089\u3001\u5f15\u304f\u6570\u3092 \u5f15\u304d\u7b97\u3057\u3066 \u4e0b\u306b \u66f8\u304d\u307e\u3059\u3002<\/p>\n<h3>4. \u5341\u306e\u4f4d\u3092\u8a08\u7b97\u3059\u308b<\/h3>\n<p>1\u3064 \u6e1b\u3089\u3057\u305f \u5341\u306e\u304f\u3089\u3044\u306e \u6570\u304b\u3089 \u5f15\u304d\u7b97\u3092 \u3057\u3066\u3001\u4e0b\u306b \u66f8\u304d\u307e\u3059\u3002<\/p>\n<p><!-- \u4f8b\u984c --><\/p>\n<section class=\"example-section\">\n<h2 class=\"example-section__heading\">\u4f8b\u984c<\/h2>\n<div class=\"problem-card\">\n<h3 class=\"problem-card__num\">\u554f1<\/h3>\n<p>\u3072\u3063\u7b97\u3092 \u898b\u3066 \u8a08\u7b97\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n<p>    <!-- \u753b\u50cf\u633f\u5165\u4e88\u5b9a\uff1a42\uff0d15\u306e\u7b46\u7b97\u3002\u4e00\u306e\u4f4d\u306e2\u304b\u30895\u306f\u5f15\u3051\u306a\u3044\u306e\u3067\u3001\u5341\u306e\u4f4d\u306e4\u3092\u659c\u7dda\u3067\u6d88\u3057\u3066\u4e0a\u306b3\u3068\u66f8\u304d\u3001\u4e00\u306e\u4f4d\u306e2\u306e\u6a2a\uff08\u307e\u305f\u306f\u4e0a\uff09\u306b10\u3092\u501f\u308a\u3066\u304d\u306612\u306b\u306a\u3063\u3066\u3044\u308b\u7b46\u7b97\u306e\u56f3 --><br \/>\n    <figure class=\"hissan hissan--sub\" role=\"math\" aria-label=\"\u7b46\u7b97: 42 \u3072\u304f 15\" style=\"--hissan-cols: 2;\"><div class=\"hissan__row hissan__row--top\"><span class=\"hissan__cell hissan__cell--op\">&nbsp;<\/span><span class=\"hissan__cell\"><span class=\"hissan__digit\">4<\/span><\/span><span class=\"hissan__cell\"><span class=\"hissan__digit\">2<\/span><\/span><\/div><div class=\"hissan__row hissan__row--bottom\"><span class=\"hissan__cell hissan__cell--op\">\u2212<\/span><span class=\"hissan__cell\"><span class=\"hissan__digit\">1<\/span><\/span><span class=\"hissan__cell\"><span class=\"hissan__digit\">5<\/span><\/span><\/div><div class=\"hissan__row hissan__row--sum\"><span class=\"hissan__cell hissan__cell--op\">&nbsp;<\/span><span class=\"hissan__cell hissan__cell--empty\"><span class=\"hissan__digit\">&nbsp;<\/span><\/span><span class=\"hissan__cell hissan__cell--empty\"><span class=\"hissan__digit\">&nbsp;<\/span><\/span><\/div><\/figure>\n  <\/div>\n<div class=\"problem-card\">\n<h3 class=\"problem-card__num\">\u554f2<\/h3>\n<p>\u3072\u3063\u7b97\u3067 \u8a08\u7b97\u3057\u307e\u3057\u3087\u3046\u3002\u5341\u306e \u304f\u3089\u3044\u304b\u3089 10\u3092 \u304b\u308a\u3066 \u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n<div class=\"risu-math risu-math--block\"><math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" display=\"block\"><mn>53<\/mn><mo>&#8211;<\/mo><mn>28<\/mn><mo>=<\/mo><\/math><\/div>\n<\/p><\/div>\n<div class=\"explanation-block\">\n<h3 class=\"explanation-block__heading\">\u89e3\u8aac<\/h3>\n<div class=\"explanation-card\">\n<h4 class=\"explanation-card__num\">\u554f1<\/h4>\n<p><span class=\"risu-math risu-math--inline\"><math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" display=\"inline\"><mn>42<\/mn><mo>&#8211;<\/mo><mn>15<\/mn><\/math><\/span> \u306e\u7b46\u7b97\u3092\u8003\u3048\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002\u307e\u305a\u306f\u4e00\u306e\u4f4d\u304b\u3089\u8003\u3048\u3066\u3044\u304d\u307e\u3059\u3002\u4eca\u56de\u306f\u3001\u5f15\u304b\u308c\u308b\u6570\u306e\u4e00\u306e\u4f4d\u304c\u5f15\u304f\u6570\u306e\u4e00\u306e\u4f4d\u3088\u308a\u3082\u5c0f\u3055\u3044\u3067\u3059\u306d\u3002\u3053\u306e\u5834\u5408\u306f\u96a3\u306e\u5341\u306e\u4f4d\u304b\u3089\u300c10\u300d\u3092\u501f\u308a\u3066\u3001\u5341\u306e\u4f4d\u306e\u5f15\u304b\u308c\u308b\u6570\u306b\u659c\u7dda\u3092\u5f15\u304d\u30011\u3064\u6e1b\u3089\u3057\u305f\u6570\u3092\u4e0a\u306b\u66f8\u3044\u3066\u304a\u304d\u307e\u3057\u3087\u3046\u3002\u3059\u308b\u3068\u4e00\u306e\u4f4d\u306e\u8a08\u7b97\u306f <span class=\"risu-math risu-math--inline\"><math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" display=\"inline\"><mn>12<\/mn><mo>&#8211;<\/mo><mn>5<\/mn><mo>=<\/mo><mn>7<\/mn><\/math><\/span> \u3068\u306a\u308b\u306e\u3067\u4e00\u306e\u4f4d\u306e\u7b54\u3048\u306b <span class=\"risu-math risu-math--inline\"><math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" display=\"inline\"><mn>7<\/mn><\/math><\/span> \u3092\u66f8\u304d\u307e\u3059\u3002\u6b21\u306b\u5341\u306e\u4f4d\u306b\u3064\u3044\u3066\u8a08\u7b97\u3057\u307e\u3059\u3002\u5148\u307b\u3069\u4e00\u306e\u4f4d\u306b\u300c10\u300d\u3092\u8cb8\u3057\u305f\u306e\u3067\u3001\u5f15\u304b\u308c\u308b\u6570\u306f <span class=\"risu-math risu-math--inline\"><math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" display=\"inline\"><mn>3<\/mn><\/math><\/span> \u3068\u306a\u308a\u307e\u3059\u3002\u3088\u3063\u3066\u5341\u306e\u4f4d\u306f <span class=\"risu-math risu-math--inline\"><math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" display=\"inline\"><mn>3<\/mn><mo>&#8211;<\/mo><mn>1<\/mn><mo>=<\/mo><mn>2<\/mn><\/math><\/span> \u3068\u306a\u308a\u307e\u3059\u3002\u3088\u3063\u3066\u3053\u306e\u7b46\u7b97\u306e\u7b54\u3048\u306f <span class=\"risu-math risu-math--inline\"><math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" display=\"inline\"><mn>27<\/mn><\/math><\/span> \u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>\u7b54\u3048\uff1a27<\/p>\n<figure class=\"hissan hissan--sub\" role=\"math\" aria-label=\"\u7b46\u7b97: 42 \u3072\u304f 15 \u30a4\u30b3\u30fc\u30eb 27\" style=\"--hissan-cols: 2;\"><div class=\"hissan__row hissan__row--top\"><span class=\"hissan__cell hissan__cell--op\">&nbsp;<\/span><span class=\"hissan__cell\"><span class=\"hissan__digit hissan__digit--strike\">4<\/span><span class=\"hissan__ann\">3<\/span><\/span><span class=\"hissan__cell\"><span class=\"hissan__digit\">2<\/span><\/span><\/div><div class=\"hissan__row hissan__row--bottom\"><span class=\"hissan__cell hissan__cell--op\">\u2212<\/span><span class=\"hissan__cell\"><span class=\"hissan__digit\">1<\/span><\/span><span class=\"hissan__cell\"><span class=\"hissan__digit\">5<\/span><\/span><\/div><div class=\"hissan__row hissan__row--sum\"><span class=\"hissan__cell hissan__cell--op\">&nbsp;<\/span><span class=\"hissan__cell\"><span class=\"hissan__digit\">2<\/span><\/span><span class=\"hissan__cell\"><span class=\"hissan__digit\">7<\/span><\/span><\/div><\/figure><\/div>\n<div class=\"explanation-card\">\n<h4 class=\"explanation-card__num\">\u554f2<\/h4>\n<p><span class=\"risu-math risu-math--inline\"><math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" display=\"inline\"><mn>53<\/mn><mo>&#8211;<\/mo><mn>28<\/mn><\/math><\/span> \u306e\u7b46\u7b97\u3092\u8003\u3048\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002\u307e\u305a\u306f\u4e00\u306e\u4f4d\u304b\u3089\u8003\u3048\u3066\u3044\u304d\u307e\u3059\u3002\u5f15\u304b\u308c\u308b\u6570\u306e\u4e00\u306e\u4f4d\u304c\u5f15\u304f\u6570\u306e\u4e00\u306e\u4f4d\u3088\u308a\u3082\u5c0f\u3055\u3044\u306e\u3067\u3001\u96a3\u306e\u5341\u306e\u4f4d\u304b\u3089\u300c10\u300d\u3092\u501f\u308a\u3066\u3001\u5341\u306e\u4f4d\u306e\u5f15\u304b\u308c\u308b\u6570\u306b\u659c\u7dda\u3092\u5f15\u304d\u30011\u3064\u6e1b\u3089\u3057\u305f\u6570\u3092\u4e0a\u306b\u66f8\u3044\u3066\u304a\u304d\u307e\u3057\u3087\u3046\u3002\u3059\u308b\u3068\u4e00\u306e\u4f4d\u306e\u8a08\u7b97\u306f <span class=\"risu-math risu-math--inline\"><math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" display=\"inline\"><mn>13<\/mn><mo>&#8211;<\/mo><mn>8<\/mn><mo>=<\/mo><mn>5<\/mn><\/math><\/span> \u3068\u306a\u308b\u306e\u3067\u4e00\u306e\u4f4d\u306e\u7b54\u3048\u306b <span class=\"risu-math risu-math--inline\"><math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" display=\"inline\"><mn>5<\/mn><\/math><\/span> \u3092\u66f8\u304d\u307e\u3059\u3002\u6b21\u306b\u5341\u306e\u4f4d\u306b\u3064\u3044\u3066\u8a08\u7b97\u3057\u307e\u3059\u3002\u5148\u307b\u3069\u4e00\u306e\u4f4d\u306b\u300c10\u300d\u3092\u8cb8\u3057\u305f\u306e\u3067\u3001\u5f15\u304b\u308c\u308b\u6570\u306f <span class=\"risu-math risu-math--inline\"><math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" display=\"inline\"><mn>4<\/mn><\/math><\/span> \u3068\u306a\u308a\u307e\u3059\u3002\u3088\u3063\u3066\u5341\u306e\u4f4d\u306f <span class=\"risu-math risu-math--inline\"><math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" display=\"inline\"><mn>4<\/mn><mo>&#8211;<\/mo><mn>2<\/mn><mo>=<\/mo><mn>2<\/mn><\/math><\/span> \u3068\u306a\u308a\u307e\u3059\u3002\u3088\u3063\u3066\u3053\u306e\u7b46\u7b97\u306e\u7b54\u3048\u306f <span class=\"risu-math risu-math--inline\"><math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" display=\"inline\"><mn>25<\/mn><\/math><\/span> \u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>\u7b54\u3048\uff1a25<\/p>\n<figure class=\"hissan hissan--sub\" role=\"math\" aria-label=\"\u7b46\u7b97: 53 \u3072\u304f 28 \u30a4\u30b3\u30fc\u30eb 25\" style=\"--hissan-cols: 2;\"><div class=\"hissan__row hissan__row--top\"><span class=\"hissan__cell hissan__cell--op\">&nbsp;<\/span><span class=\"hissan__cell\"><span class=\"hissan__digit hissan__digit--strike\">5<\/span><span class=\"hissan__ann\">4<\/span><\/span><span class=\"hissan__cell\"><span class=\"hissan__digit\">3<\/span><\/span><\/div><div class=\"hissan__row hissan__row--bottom\"><span class=\"hissan__cell hissan__cell--op\">\u2212<\/span><span class=\"hissan__cell\"><span class=\"hissan__digit\">2<\/span><\/span><span class=\"hissan__cell\"><span class=\"hissan__digit\">8<\/span><\/span><\/div><div class=\"hissan__row hissan__row--sum\"><span class=\"hissan__cell hissan__cell--op\">&nbsp;<\/span><span class=\"hissan__cell\"><span class=\"hissan__digit\">2<\/span><\/span><span class=\"hissan__cell\"><span class=\"hissan__digit\">5<\/span><\/span><\/div><\/figure><\/div>\n<\/p><\/div>\n<\/section>\n<p><!-- \u7df4\u7fd2\u554f\u984c --><\/p>\n<section class=\"practice-problems\">\n<h2>\u7df4\u7fd2\u554f\u984c<\/h2>\n<div class=\"problem-card\">\n<h3 class=\"problem-card__num\">\u554f1<\/h3>\n<p>\u3072\u3063\u7b97\u3067 \u8a08\u7b97\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n<div class=\"risu-math risu-math--block\"><math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" display=\"block\"><mn>34<\/mn><mo>&#8211;<\/mo><mn>16<\/mn><mo>=<\/mo><\/math><\/div>\n<\/p><\/div>\n<div class=\"problem-card\">\n<h3 class=\"problem-card__num\">\u554f2<\/h3>\n<p>\u3072\u3063\u7b97\u3067 \u8a08\u7b97\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n<div class=\"risu-math risu-math--block\"><math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" display=\"block\"><mn>90<\/mn><mo>&#8211;<\/mo><mn>83<\/mn><mo>=<\/mo><\/math><\/div>\n<\/p><\/div>\n<div class=\"problem-card\">\n<h3 class=\"problem-card__num\">\u554f3<\/h3>\n<p>\u672c\u3092 72\u30da\u30fc\u30b8 \u8aad\u307f\u307e\u3059\u3002\u4eca\u306f 35\u30da\u30fc\u30b8 \u8aad\u307f\u307e\u3057\u305f\u3002\u306e\u3053\u308a\u306f \u4f55\u30da\u30fc\u30b8 \u3067\u3059\u304b\u3002<\/p>\n<\/p><\/div>\n<\/section>\n<p><!-- \u5fdc\u7528\u554f\u984c --><\/p>\n<section class=\"advanced-problems\">\n<h2>\u5fdc\u7528\u554f\u984c<\/h2>\n<div class=\"problem-card\">\n<h3 class=\"problem-card__num\">\u554f1<\/h3>\n<p>80\u5186 \u3082\u3063\u3066 \u8cb7\u3044\u3082\u306e\u306b \u884c\u304d\u307e\u3057\u305f\u300246\u5186\u306e \u30a2\u30a4\u30b9\u3092 \u8cb7\u3046\u3068\u3001\u306e\u3053\u308a\u306f \u4f55\u5186 \u3067\u3059\u304b\u3002<\/p>\n<\/p><\/div>\n<div class=\"problem-card\">\n<h3 class=\"problem-card__num\">\u554f2<\/h3>\n<p>\u9577\u3044 \u30ea\u30dc\u30f3\u304c 92\u30bb\u30f3\u30c1\u3001\u77ed\u3044 \u30ea\u30dc\u30f3\u304c 65\u30bb\u30f3\u30c1 \u3042\u308a\u307e\u3059\u3002\u4f55\u30bb\u30f3\u30c1 \u3061\u304c\u3044\u307e\u3059\u304b\u3002<\/p>\n<\/p><\/div>\n<div class=\"problem-card\">\n<h3 class=\"problem-card__num\">\u554f3<\/h3>\n<p>\u3053\u306e \u3072\u3063\u7b97\u306f \u3069\u3053\u304c \u307e\u3061\u304c\u3063\u3066 \u3044\u307e\u3059\u304b\u3002\u6b63\u3057\u3044 \u3072\u3063\u7b97\u3092 \u66f8\u3044\u3066\u3001\u7b54\u3048\u3092 \u51fa\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n<p>    <!-- \u753b\u50cf\u633f\u5165\u4e88\u5b9a\uff1a73\uff0d48\u306e\u7b46\u7b97\u3067\u3001\u4e00\u306e\u4f4d\u306f\u5f15\u3051\u306a\u3044\u304b\u30898-3\u3092\u3057\u30665\u3068\u3057\u3001\u5341\u306e\u4f4d\u306f7-4\u3092\u3057\u30663\u3068\u3057\u3001\u7b54\u3048\u3092\u300c35\u300d\u3068\u3057\u3066\u3044\u308b\u9593\u9055\u3044\u306e\u56f3 --><br \/>\n<figure class=\"hissan hissan--manual\" role=\"math\" aria-label=\"\u7b46\u7b97: 73 \u221248 35\" style=\"--hissan-cols: 2;\"><div class=\"hissan__row hissan__row--manual\"><span class=\"hissan__cell hissan__cell--op\">&nbsp;<\/span><span class=\"hissan__cell\"><span class=\"hissan__digit\">7<\/span><\/span><span class=\"hissan__cell\"><span class=\"hissan__digit\">3<\/span><\/span><\/div><div class=\"hissan__row hissan__row--manual\"><span class=\"hissan__cell hissan__cell--op\">\u2212<\/span><span class=\"hissan__cell\"><span class=\"hissan__digit\">4<\/span><\/span><span class=\"hissan__cell\"><span class=\"hissan__digit\">8<\/span><\/span><\/div><div class=\"hissan__row hissan__row--line\" aria-hidden=\"true\"><span class=\"hissan__line-bar\"><\/span><\/div><div class=\"hissan__row hissan__row--manual\"><span class=\"hissan__cell hissan__cell--op\">&nbsp;<\/span><span class=\"hissan__cell\"><span class=\"hissan__digit\">3<\/span><\/span><span class=\"hissan__cell\"><span class=\"hissan__digit\">5<\/span><\/span><\/div><\/figure>\n  <\/div>\n<\/section>\n<p><!-- \u89e3\u7b54\u3068\u89e3\u8aac --><\/p>\n<section class=\"answer-section\">\n<h2>\u89e3\u7b54\u3068\u89e3\u8aac<\/h2>\n<div class=\"answer-group answer-group--practice\">\n<h3>\u7df4\u7fd2\u554f\u984c<\/h3>\n<div class=\"explanation-card\">\n<h4 class=\"explanation-card__num\">\u554f1<\/h4>\n<p><span class=\"risu-math risu-math--inline\"><math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" display=\"inline\"><mn>34<\/mn><mo>&#8211;<\/mo><mn>16<\/mn><\/math><\/span> \u306e\u7b46\u7b97\u3092\u8003\u3048\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002\u307e\u305a\u306f\u4e00\u306e\u4f4d\u304b\u3089\u8003\u3048\u3066\u3044\u304d\u307e\u3059\u3002\u5f15\u304b\u308c\u308b\u6570\u306e\u4e00\u306e\u4f4d\u304c\u5f15\u304f\u6570\u306e\u4e00\u306e\u4f4d\u3088\u308a\u3082\u5c0f\u3055\u3044\u306e\u3067\u3001\u96a3\u306e\u5341\u306e\u4f4d\u304b\u3089\u300c10\u300d\u3092\u501f\u308a\u3066\u3001\u5341\u306e\u4f4d\u306e\u5f15\u304b\u308c\u308b\u6570\u306b\u659c\u7dda\u3092\u5f15\u304d\u30011\u3064\u6e1b\u3089\u3057\u305f\u6570\u3092\u4e0a\u306b\u66f8\u3044\u3066\u304a\u304d\u307e\u3057\u3087\u3046\u3002\u3059\u308b\u3068\u4e00\u306e\u4f4d\u306e\u8a08\u7b97\u306f <span class=\"risu-math risu-math--inline\"><math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" display=\"inline\"><mn>14<\/mn><mo>&#8211;<\/mo><mn>6<\/mn><mo>=<\/mo><mn>8<\/mn><\/math><\/span> \u3068\u306a\u308b\u306e\u3067\u4e00\u306e\u4f4d\u306e\u7b54\u3048\u306b <span class=\"risu-math risu-math--inline\"><math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" display=\"inline\"><mn>8<\/mn><\/math><\/span> \u3092\u66f8\u304d\u307e\u3059\u3002\u6b21\u306b\u5341\u306e\u4f4d\u306b\u3064\u3044\u3066\u8a08\u7b97\u3057\u307e\u3059\u3002\u5148\u307b\u3069\u4e00\u306e\u4f4d\u306b\u300c10\u300d\u3092\u8cb8\u3057\u305f\u306e\u3067\u3001\u5f15\u304b\u308c\u308b\u6570\u306f <span class=\"risu-math risu-math--inline\"><math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" display=\"inline\"><mn>2<\/mn><\/math><\/span> \u3068\u306a\u308a\u307e\u3059\u3002\u3088\u3063\u3066\u5341\u306e\u4f4d\u306f <span class=\"risu-math risu-math--inline\"><math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" display=\"inline\"><mn>2<\/mn><mo>&#8211;<\/mo><mn>1<\/mn><mo>=<\/mo><mn>1<\/mn><\/math><\/span> \u3068\u306a\u308a\u307e\u3059\u3002\u3088\u3063\u3066\u3053\u306e\u7b46\u7b97\u306e\u7b54\u3048\u306f <span class=\"risu-math risu-math--inline\"><math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" display=\"inline\"><mn>18<\/mn><\/math><\/span> \u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>\u7b54\u3048\uff1a18<\/p>\n<figure class=\"hissan hissan--sub\" role=\"math\" aria-label=\"\u7b46\u7b97: 34 \u3072\u304f 16 \u30a4\u30b3\u30fc\u30eb 18\" style=\"--hissan-cols: 2;\"><div class=\"hissan__row hissan__row--top\"><span class=\"hissan__cell hissan__cell--op\">&nbsp;<\/span><span class=\"hissan__cell\"><span class=\"hissan__digit hissan__digit--strike\">3<\/span><span class=\"hissan__ann\">2<\/span><\/span><span class=\"hissan__cell\"><span class=\"hissan__digit\">4<\/span><\/span><\/div><div class=\"hissan__row hissan__row--bottom\"><span class=\"hissan__cell hissan__cell--op\">\u2212<\/span><span class=\"hissan__cell\"><span class=\"hissan__digit\">1<\/span><\/span><span class=\"hissan__cell\"><span class=\"hissan__digit\">6<\/span><\/span><\/div><div class=\"hissan__row hissan__row--sum\"><span class=\"hissan__cell hissan__cell--op\">&nbsp;<\/span><span class=\"hissan__cell\"><span class=\"hissan__digit\">1<\/span><\/span><span class=\"hissan__cell\"><span class=\"hissan__digit\">8<\/span><\/span><\/div><\/figure><\/div>\n<div class=\"explanation-card\">\n<h4 class=\"explanation-card__num\">\u554f2<\/h4>\n<p><span class=\"risu-math risu-math--inline\"><math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" display=\"inline\"><mn>90<\/mn><mo>&#8211;<\/mo><mn>83<\/mn><\/math><\/span> \u306e\u7b46\u7b97\u3092\u8003\u3048\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002\u307e\u305a\u306f\u4e00\u306e\u4f4d\u304b\u3089\u8003\u3048\u3066\u3044\u304d\u307e\u3059\u3002\u5f15\u304b\u308c\u308b\u6570\u306e\u4e00\u306e\u4f4d\u304c\u5f15\u304f\u6570\u306e\u4e00\u306e\u4f4d\u3088\u308a\u3082\u5c0f\u3055\u3044\u306e\u3067\u3001\u96a3\u306e\u5341\u306e\u4f4d\u304b\u3089\u300c10\u300d\u3092\u501f\u308a\u3066\u3001\u5341\u306e\u4f4d\u306e\u5f15\u304b\u308c\u308b\u6570\u306b\u659c\u7dda\u3092\u5f15\u304d\u30011\u3064\u6e1b\u3089\u3057\u305f\u6570\u3092\u4e0a\u306b\u66f8\u3044\u3066\u304a\u304d\u307e\u3057\u3087\u3046\u3002\u3059\u308b\u3068\u4e00\u306e\u4f4d\u306e\u8a08\u7b97\u306f <span class=\"risu-math risu-math--inline\"><math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" display=\"inline\"><mn>10<\/mn><mo>&#8211;<\/mo><mn>3<\/mn><mo>=<\/mo><mn>7<\/mn><\/math><\/span> \u3068\u306a\u308b\u306e\u3067\u4e00\u306e\u4f4d\u306e\u7b54\u3048\u306b <span class=\"risu-math risu-math--inline\"><math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" display=\"inline\"><mn>7<\/mn><\/math><\/span> \u3092\u66f8\u304d\u307e\u3059\u3002\u6b21\u306b\u5341\u306e\u4f4d\u306b\u3064\u3044\u3066\u8a08\u7b97\u3057\u307e\u3059\u3002\u5148\u307b\u3069\u4e00\u306e\u4f4d\u306b\u300c10\u300d\u3092\u8cb8\u3057\u305f\u306e\u3067\u3001\u5f15\u304b\u308c\u308b\u6570\u306f <span class=\"risu-math risu-math--inline\"><math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" display=\"inline\"><mn>8<\/mn><\/math><\/span> \u3068\u306a\u308a\u307e\u3059\u3002\u3088\u3063\u3066\u5341\u306e\u4f4d\u306f <span class=\"risu-math risu-math--inline\"><math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" display=\"inline\"><mn>8<\/mn><mo>&#8211;<\/mo><mn>8<\/mn><mo>=<\/mo><mn>0<\/mn><\/math><\/span> \u3068\u306a\u308a\u3001\u3053\u306e\u7b46\u7b97\u306e\u7b54\u3048\u306f <span class=\"risu-math risu-math--inline\"><math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" display=\"inline\"><mn>7<\/mn><\/math><\/span> \u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>\u7b54\u3048\uff1a7<\/p>\n<figure class=\"hissan hissan--sub\" role=\"math\" aria-label=\"\u7b46\u7b97: 90 \u3072\u304f 83 \u30a4\u30b3\u30fc\u30eb 7\" style=\"--hissan-cols: 2;\"><div class=\"hissan__row hissan__row--top\"><span class=\"hissan__cell hissan__cell--op\">&nbsp;<\/span><span class=\"hissan__cell\"><span class=\"hissan__digit hissan__digit--strike\">9<\/span><span class=\"hissan__ann\">8<\/span><\/span><span class=\"hissan__cell\"><span class=\"hissan__digit\">0<\/span><\/span><\/div><div class=\"hissan__row hissan__row--bottom\"><span class=\"hissan__cell hissan__cell--op\">\u2212<\/span><span class=\"hissan__cell\"><span class=\"hissan__digit\">8<\/span><\/span><span class=\"hissan__cell\"><span class=\"hissan__digit\">3<\/span><\/span><\/div><div class=\"hissan__row hissan__row--sum\"><span class=\"hissan__cell hissan__cell--op\">&nbsp;<\/span><span class=\"hissan__cell hissan__cell--empty\"><span class=\"hissan__digit\">&nbsp;<\/span><\/span><span class=\"hissan__cell\"><span class=\"hissan__digit\">7<\/span><\/span><\/div><\/figure><\/div>\n<div class=\"explanation-card\">\n<h4 class=\"explanation-card__num\">\u554f3<\/h4>\n<p>\u6b8b\u308a\u306e\u30da\u30fc\u30b8\u6570\u3092\u77e5\u308a\u305f\u3044\u306e\u3067\u5f15\u304d\u7b97\u3092\u3057\u3066\u307f\u307e\u3059\u3002<span class=\"risu-math risu-math--inline\"><math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" display=\"inline\"><mn>72<\/mn><mo>&#8211;<\/mo><mn>35<\/mn><\/math><\/span> \u306e\u7b46\u7b97\u3092\u8003\u3048\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002\u307e\u305a\u306f\u4e00\u306e\u4f4d\u304b\u3089\u8003\u3048\u3066\u3044\u304d\u307e\u3059\u3002\u5f15\u304b\u308c\u308b\u6570\u306e\u4e00\u306e\u4f4d\u304c\u5f15\u304f\u6570\u306e\u4e00\u306e\u4f4d\u3088\u308a\u3082\u5c0f\u3055\u3044\u306e\u3067\u3001\u96a3\u306e\u5341\u306e\u4f4d\u304b\u3089\u300c10\u300d\u3092\u501f\u308a\u3066\u3001\u5341\u306e\u4f4d\u306e\u5f15\u304b\u308c\u308b\u6570\u306b\u659c\u7dda\u3092\u5f15\u304d\u30011\u3064\u6e1b\u3089\u3057\u305f\u6570\u3092\u4e0a\u306b\u66f8\u3044\u3066\u304a\u304d\u307e\u3057\u3087\u3046\u3002\u3059\u308b\u3068\u4e00\u306e\u4f4d\u306e\u8a08\u7b97\u306f <span class=\"risu-math risu-math--inline\"><math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" display=\"inline\"><mn>12<\/mn><mo>&#8211;<\/mo><mn>5<\/mn><mo>=<\/mo><mn>7<\/mn><\/math><\/span> \u3068\u306a\u308b\u306e\u3067\u4e00\u306e\u4f4d\u306e\u7b54\u3048\u306b <span class=\"risu-math risu-math--inline\"><math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" display=\"inline\"><mn>7<\/mn><\/math><\/span> \u3092\u66f8\u304d\u307e\u3059\u3002\u6b21\u306b\u5341\u306e\u4f4d\u306b\u3064\u3044\u3066\u8a08\u7b97\u3057\u307e\u3059\u3002\u5148\u307b\u3069\u4e00\u306e\u4f4d\u306b\u300c10\u300d\u3092\u8cb8\u3057\u305f\u306e\u3067\u3001\u5f15\u304b\u308c\u308b\u6570\u306f <span class=\"risu-math risu-math--inline\"><math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" display=\"inline\"><mn>6<\/mn><\/math><\/span> \u3068\u306a\u308a\u307e\u3059\u3002\u3088\u3063\u3066\u5341\u306e\u4f4d\u306f <span class=\"risu-math risu-math--inline\"><math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" display=\"inline\"><mn>6<\/mn><mo>&#8211;<\/mo><mn>3<\/mn><mo>=<\/mo><mn>3<\/mn><\/math><\/span> \u3068\u306a\u308a\u307e\u3059\u3002\u3088\u3063\u3066\u3053\u306e\u7b46\u7b97\u306e\u7b54\u3048\u306f <span class=\"risu-math risu-math--inline\"><math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" display=\"inline\"><mn>37<\/mn><\/math><\/span> \u3068\u306a\u308a\u3001\u6b8b\u308a\u306e\u30da\u30fc\u30b8\u306f <span class=\"risu-math risu-math--inline\"><math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" display=\"inline\"><mn>37<\/mn><\/math><\/span> \u30da\u30fc\u30b8\u3067\u3042\u308b\u3053\u3068\u304c\u5206\u304b\u308a\u307e\u3059\u3002<\/p>\n<p>\u7b54\u3048\uff1a37\u30da\u30fc\u30b8<\/p>\n<figure class=\"hissan hissan--sub\" role=\"math\" aria-label=\"\u7b46\u7b97: 72 \u3072\u304f 35 \u30a4\u30b3\u30fc\u30eb 37\" style=\"--hissan-cols: 2;\"><div class=\"hissan__row hissan__row--top\"><span class=\"hissan__cell hissan__cell--op\">&nbsp;<\/span><span class=\"hissan__cell\"><span class=\"hissan__digit hissan__digit--strike\">7<\/span><span class=\"hissan__ann\">6<\/span><\/span><span class=\"hissan__cell\"><span class=\"hissan__digit\">2<\/span><\/span><\/div><div class=\"hissan__row hissan__row--bottom\"><span class=\"hissan__cell hissan__cell--op\">\u2212<\/span><span class=\"hissan__cell\"><span class=\"hissan__digit\">3<\/span><\/span><span class=\"hissan__cell\"><span class=\"hissan__digit\">5<\/span><\/span><\/div><div class=\"hissan__row hissan__row--sum\"><span class=\"hissan__cell hissan__cell--op\">&nbsp;<\/span><span class=\"hissan__cell\"><span class=\"hissan__digit\">3<\/span><\/span><span class=\"hissan__cell\"><span class=\"hissan__digit\">7<\/span><\/span><\/div><\/figure><\/div>\n<\/p><\/div>\n<div class=\"answer-group answer-group--advanced\">\n<h3>\u5fdc\u7528\u554f\u984c<\/h3>\n<div class=\"explanation-card\">\n<h4 class=\"explanation-card__num\">\u554f1<\/h4>\n<p>\u6b8b\u308a\u306e\u91d1\u984d\u3092\u77e5\u308a\u305f\u3044\u306e\u3067\u5f15\u304d\u7b97\u3092\u3057\u3066\u307f\u307e\u3059\u3002<span class=\"risu-math risu-math--inline\"><math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" display=\"inline\"><mn>80<\/mn><mo>&#8211;<\/mo><mn>46<\/mn><\/math><\/span> \u306e\u7b46\u7b97\u3092\u8003\u3048\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002\u307e\u305a\u306f\u4e00\u306e\u4f4d\u304b\u3089\u8003\u3048\u3066\u3044\u304d\u307e\u3059\u3002\u5f15\u304b\u308c\u308b\u6570\u306e\u4e00\u306e\u4f4d\u304c\u5f15\u304f\u6570\u306e\u4e00\u306e\u4f4d\u3088\u308a\u3082\u5c0f\u3055\u3044\u306e\u3067\u3001\u96a3\u306e\u5341\u306e\u4f4d\u304b\u3089\u300c10\u300d\u3092\u501f\u308a\u3066\u3001\u5341\u306e\u4f4d\u306e\u5f15\u304b\u308c\u308b\u6570\u306b\u659c\u7dda\u3092\u5f15\u304d\u30011\u3064\u6e1b\u3089\u3057\u305f\u6570\u3092\u4e0a\u306b\u66f8\u3044\u3066\u304a\u304d\u307e\u3057\u3087\u3046\u3002\u3059\u308b\u3068\u4e00\u306e\u4f4d\u306e\u8a08\u7b97\u306f <span class=\"risu-math risu-math--inline\"><math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" display=\"inline\"><mn>10<\/mn><mo>&#8211;<\/mo><mn>6<\/mn><mo>=<\/mo><mn>4<\/mn><\/math><\/span> \u3068\u306a\u308b\u306e\u3067\u4e00\u306e\u4f4d\u306e\u7b54\u3048\u306b <span class=\"risu-math risu-math--inline\"><math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" display=\"inline\"><mn>4<\/mn><\/math><\/span> \u3092\u66f8\u304d\u307e\u3059\u3002\u6b21\u306b\u5341\u306e\u4f4d\u306b\u3064\u3044\u3066\u8a08\u7b97\u3057\u307e\u3059\u3002\u5148\u307b\u3069\u4e00\u306e\u4f4d\u306b\u300c10\u300d\u3092\u8cb8\u3057\u305f\u306e\u3067\u3001\u5f15\u304b\u308c\u308b\u6570\u306f <span class=\"risu-math risu-math--inline\"><math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" display=\"inline\"><mn>7<\/mn><\/math><\/span> \u3068\u306a\u308a\u307e\u3059\u3002\u3088\u3063\u3066\u5341\u306e\u4f4d\u306f <span class=\"risu-math risu-math--inline\"><math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" display=\"inline\"><mn>7<\/mn><mo>&#8211;<\/mo><mn>4<\/mn><mo>=<\/mo><mn>3<\/mn><\/math><\/span> \u3068\u306a\u308a\u307e\u3059\u3002\u3088\u3063\u3066\u3053\u306e\u7b46\u7b97\u306e\u7b54\u3048\u306f <span class=\"risu-math risu-math--inline\"><math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" display=\"inline\"><mn>34<\/mn><\/math><\/span> \u3068\u306a\u308a\u3001\u6b8b\u308a\u306e\u91d1\u984d\u306f <span class=\"risu-math risu-math--inline\"><math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" display=\"inline\"><mn>34<\/mn><\/math><\/span> \u5186\u3067\u3042\u308b\u3053\u3068\u304c\u5206\u304b\u308a\u307e\u3059\u3002<\/p>\n<p>\u7b54\u3048\uff1a34\u5186<\/p>\n<figure class=\"hissan hissan--sub\" role=\"math\" aria-label=\"\u7b46\u7b97: 80 \u3072\u304f 46 \u30a4\u30b3\u30fc\u30eb 34\" style=\"--hissan-cols: 2;\"><div class=\"hissan__row hissan__row--top\"><span class=\"hissan__cell hissan__cell--op\">&nbsp;<\/span><span class=\"hissan__cell\"><span class=\"hissan__digit hissan__digit--strike\">8<\/span><span class=\"hissan__ann\">7<\/span><\/span><span class=\"hissan__cell\"><span class=\"hissan__digit\">0<\/span><\/span><\/div><div class=\"hissan__row hissan__row--bottom\"><span class=\"hissan__cell hissan__cell--op\">\u2212<\/span><span class=\"hissan__cell\"><span class=\"hissan__digit\">4<\/span><\/span><span class=\"hissan__cell\"><span class=\"hissan__digit\">6<\/span><\/span><\/div><div class=\"hissan__row hissan__row--sum\"><span class=\"hissan__cell hissan__cell--op\">&nbsp;<\/span><span class=\"hissan__cell\"><span class=\"hissan__digit\">3<\/span><\/span><span class=\"hissan__cell\"><span class=\"hissan__digit\">4<\/span><\/span><\/div><\/figure><\/div>\n<div class=\"explanation-card\">\n<h4 class=\"explanation-card__num\">\u554f2<\/h4>\n<p>\u5dee\u3092\u6c42\u3081\u305f\u3044\u306e\u3067\u9577\u3044\u30ea\u30dc\u30f3\u306e\u9577\u3055\u304b\u3089\u77ed\u3044\u30ea\u30dc\u30f3\u306e\u9577\u3055\u3092\u5f15\u3044\u3066\u307f\u307e\u3057\u3087\u3046\u3002<span class=\"risu-math risu-math--inline\"><math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" display=\"inline\"><mn>92<\/mn><mo>&#8211;<\/mo><mn>65<\/mn><\/math><\/span> \u306e\u7b46\u7b97\u3092\u8003\u3048\u3066\u3044\u304d\u307e\u3059\u3002\u307e\u305a\u306f\u4e00\u306e\u4f4d\u304b\u3089\u8003\u3048\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002\u5f15\u304b\u308c\u308b\u6570\u306e\u4e00\u306e\u4f4d\u304c\u5f15\u304f\u6570\u306e\u4e00\u306e\u4f4d\u3088\u308a\u3082\u5c0f\u3055\u3044\u306e\u3067\u3001\u96a3\u306e\u5341\u306e\u4f4d\u304b\u3089\u300c10\u300d\u3092\u501f\u308a\u3066\u3001\u5341\u306e\u4f4d\u306e\u5f15\u304b\u308c\u308b\u6570\u306b\u659c\u7dda\u3092\u5f15\u304d\u30011\u3064\u6e1b\u3089\u3057\u305f\u6570\u3092\u4e0a\u306b\u66f8\u3044\u3066\u304a\u304d\u307e\u3057\u3087\u3046\u3002\u3059\u308b\u3068\u4e00\u306e\u4f4d\u306e\u8a08\u7b97\u306f <span class=\"risu-math risu-math--inline\"><math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" display=\"inline\"><mn>12<\/mn><mo>&#8211;<\/mo><mn>5<\/mn><mo>=<\/mo><mn>7<\/mn><\/math><\/span> \u3068\u306a\u308b\u306e\u3067\u4e00\u306e\u4f4d\u306e\u7b54\u3048\u306b <span class=\"risu-math risu-math--inline\"><math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" display=\"inline\"><mn>7<\/mn><\/math><\/span> \u3092\u66f8\u304d\u307e\u3059\u3002\u6b21\u306b\u5341\u306e\u4f4d\u306b\u3064\u3044\u3066\u8a08\u7b97\u3057\u307e\u3059\u3002\u5148\u307b\u3069\u4e00\u306e\u4f4d\u306b\u300c10\u300d\u3092\u8cb8\u3057\u305f\u306e\u3067\u3001\u5f15\u304b\u308c\u308b\u6570\u306f <span class=\"risu-math risu-math--inline\"><math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" display=\"inline\"><mn>8<\/mn><\/math><\/span> \u3068\u306a\u308a\u307e\u3059\u3002\u3088\u3063\u3066\u5341\u306e\u4f4d\u306f <span class=\"risu-math risu-math--inline\"><math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" display=\"inline\"><mn>8<\/mn><mo>&#8211;<\/mo><mn>6<\/mn><mo>=<\/mo><mn>2<\/mn><\/math><\/span> \u3068\u306a\u308a\u307e\u3059\u3002\u3088\u3063\u3066\u3053\u306e\u7b46\u7b97\u306e\u7b54\u3048\u306f <span class=\"risu-math risu-math--inline\"><math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" display=\"inline\"><mn>27<\/mn><\/math><\/span> \u3068\u306a\u308a\u3001\u30ea\u30dc\u30f3\u306e\u5dee\u306f <span class=\"risu-math risu-math--inline\"><math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" display=\"inline\"><mn>27<\/mn><\/math><\/span> \u30bb\u30f3\u30c1\u3067\u3042\u308b\u3053\u3068\u304c\u5206\u304b\u308a\u307e\u3059\u3002<\/p>\n<p>\u7b54\u3048\uff1a27\u30bb\u30f3\u30c1<\/p>\n<figure class=\"hissan hissan--sub\" role=\"math\" aria-label=\"\u7b46\u7b97: 92 \u3072\u304f 65 \u30a4\u30b3\u30fc\u30eb 27\" style=\"--hissan-cols: 2;\"><div class=\"hissan__row hissan__row--top\"><span class=\"hissan__cell hissan__cell--op\">&nbsp;<\/span><span class=\"hissan__cell\"><span class=\"hissan__digit hissan__digit--strike\">9<\/span><span class=\"hissan__ann\">8<\/span><\/span><span class=\"hissan__cell\"><span class=\"hissan__digit\">2<\/span><\/span><\/div><div class=\"hissan__row hissan__row--bottom\"><span class=\"hissan__cell hissan__cell--op\">\u2212<\/span><span class=\"hissan__cell\"><span class=\"hissan__digit\">6<\/span><\/span><span class=\"hissan__cell\"><span class=\"hissan__digit\">5<\/span><\/span><\/div><div class=\"hissan__row hissan__row--sum\"><span class=\"hissan__cell hissan__cell--op\">&nbsp;<\/span><span class=\"hissan__cell\"><span class=\"hissan__digit\">2<\/span><\/span><span class=\"hissan__cell\"><span class=\"hissan__digit\">7<\/span><\/span><\/div><\/figure><\/div>\n<div class=\"explanation-card\">\n<h4 class=\"explanation-card__num\">\u554f3<\/h4>\n<p>\u3053\u306e\u7b46\u7b97\u306f\u3069\u3053\u304c\u9593\u9055\u3063\u3066\u3044\u308b\u306e\u3067\u3057\u3087\u3046\u304b\u3002\u304f\u308a\u4e0b\u304c\u308a\u306e\u3042\u308b\u7b46\u7b97\u306b\u3064\u3044\u3066\u601d\u3044\u51fa\u3057\u3066\u307f\u307e\u3057\u3087\u3046\u3002\u307e\u305a\u306f\u4e00\u306e\u4f4d\u304b\u3089\u8003\u3048\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002\u5f15\u304b\u308c\u308b\u6570\u306e\u4e00\u306e\u4f4d\u304c\u5f15\u304f\u6570\u306e\u4e00\u306e\u4f4d\u3088\u308a\u3082\u5c0f\u3055\u3044\u306e\u3067\u3001\u96a3\u306e\u5341\u306e\u4f4d\u304b\u3089\u300c10\u300d\u3092\u501f\u308a\u3066\u3001\u5341\u306e\u4f4d\u306e\u5f15\u304b\u308c\u308b\u6570\u306b\u659c\u7dda\u3092\u5f15\u304d\u30011\u3064\u6e1b\u3089\u3057\u305f\u6570\u3092\u4e0a\u306b\u66f8\u3044\u3066\u304a\u304f\u306e\u3067\u3057\u305f\u306d\u3002\u3059\u308b\u3068\u4e00\u306e\u4f4d\u306e\u8a08\u7b97\u306f <span class=\"risu-math risu-math--inline\"><math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" display=\"inline\"><mn>13<\/mn><mo>&#8211;<\/mo><mn>8<\/mn><mo>=<\/mo><mn>5<\/mn><\/math><\/span> \u3068\u306a\u308b\u306e\u3067\u4e00\u306e\u4f4d\u306e\u7b54\u3048\u306f <span class=\"risu-math risu-math--inline\"><math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" display=\"inline\"><mn>5<\/mn><\/math><\/span> \u3068\u306a\u308a\u307e\u3059\u3002\u3057\u304b\u3057\u4eca\u56de\u306f\u304f\u308a\u4e0b\u304c\u308a\u3092\u5fd8\u308c\u3066\u3001\u4e00\u306e\u4f4d\u306e\u5f15\u304d\u7b97\u3092\u300c <span class=\"risu-math risu-math--inline\"><math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" display=\"inline\"><mn>8<\/mn><mo>&#8211;<\/mo><mn>3<\/mn><\/math><\/span> \u300d\u3068\u3057\u3066\u8a08\u7b97\u3057\u3066\u3057\u307e\u3063\u3066\u3044\u307e\u3059\u3002\u304f\u308a\u4e0b\u304c\u308a\u306b\u6c17\u3092\u4ed8\u3051\u3066\u81ea\u5206\u3067\u8a08\u7b97\u3092\u3057\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n<p>\u7b54\u3048\uff1a\u304f\u308a\u4e0b\u304c\u308a\u304c\u3067\u304d\u3066\u3044\u306a\u3044\u300225<\/p>\n<figure class=\"hissan hissan--sub\" role=\"math\" aria-label=\"\u7b46\u7b97: 73 \u3072\u304f 48 \u30a4\u30b3\u30fc\u30eb 25\" style=\"--hissan-cols: 2;\"><div class=\"hissan__row hissan__row--top\"><span class=\"hissan__cell hissan__cell--op\">&nbsp;<\/span><span class=\"hissan__cell\"><span class=\"hissan__digit hissan__digit--strike\">7<\/span><span class=\"hissan__ann\">6<\/span><\/span><span class=\"hissan__cell\"><span class=\"hissan__digit\">3<\/span><\/span><\/div><div class=\"hissan__row hissan__row--bottom\"><span class=\"hissan__cell hissan__cell--op\">\u2212<\/span><span class=\"hissan__cell\"><span class=\"hissan__digit\">4<\/span><\/span><span class=\"hissan__cell\"><span class=\"hissan__digit\">8<\/span><\/span><\/div><div class=\"hissan__row hissan__row--sum\"><span class=\"hissan__cell hissan__cell--op\">&nbsp;<\/span><span class=\"hissan__cell\"><span class=\"hissan__digit\">2<\/span><\/span><span class=\"hissan__cell\"><span class=\"hissan__digit\">5<\/span><\/span><\/div><\/figure><\/div>\n<\/p><\/div>\n<\/section>\n<p><!-- \u5b66\u7fd2\u306e\u30a2\u30c9\u30d0\u30a4\u30b9 --><\/p>\n<aside class=\"advice-box\">\n<h2 class=\"advice-box__heading\">\u5b66\u7fd2\u306e\u30a2\u30c9\u30d0\u30a4\u30b9<\/h2>\n<div class=\"advice-box__body\">\n<p>\u4eca\u56de\u306f\u304f\u308a\u4e0b\u304c\u308a\u306e\u3042\u308b\u5f15\u304d\u7b97\u306e\u7b46\u7b97\u306b\u3064\u3044\u3066\u52c9\u5f37\u3057\u307e\u3057\u305f\u3002\u5927\u5207\u306a\u30dd\u30a4\u30f3\u30c8\u3092\u307e\u3068\u3081\u307e\u3057\u3087\u3046\u3002<\/p>\n<ul>\n<li><strong>\u304f\u308a\u4e0b\u304c\u308a\u306e\u624b\u9806\u3092\u5b88\u308b<\/strong>\uff1a\u96a3\u306e\u5341\u306e\u4f4d\u304b\u3089\u300c10\u300d\u3092\u501f\u308a\u3066\u3001\u5341\u306e\u4f4d\u306e\u5f15\u304b\u308c\u308b\u6570\u306b\u659c\u7dda\u3092\u5f15\u304d\u30011\u3064\u6e1b\u3089\u3057\u305f\u6570\u3092\u4e0a\u306b\u66f8\u3044\u3066\u304a\u304f\u3053\u3068\u3092\u5fd8\u308c\u306a\u3044\u3088\u3046\u306b\u3057\u307e\u3057\u3087\u3046\u3002<\/li>\n<li><strong>\u5f15\u304d\u7b97\u306e\u5411\u304d\u306b\u6ce8\u610f<\/strong>\uff1a\u5f15\u304d\u7b97\u306f\u3069\u3093\u306a\u3068\u304d\u3067\u3082\u300c\u5f15\u304b\u308c\u308b\u6570 <span class=\"risu-math risu-math--inline\"><math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" display=\"inline\"><mo>&#8211;<\/mo><\/math><\/span> \u5f15\u304f\u6570\u300d\u3067\u6c42\u3081\u308b\u3053\u3068\u306b\u6ce8\u610f\u3057\u307e\u3057\u3087\u3046\u3002<\/li>\n<\/ul><\/div>\n<\/aside>\n<p><!-- body-end --><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u304f\u308a\u4e0b\u304c\u308a\u306e\u3042\u308b \u5f15\u304d\u7b97\u306e \u3072\u3063\u7b97\u3068\u306f 2\u6841\u306e\u5f15\u304d\u7b97\u3067\u3001\u4e00\u306e\u4f4d\u304c\u5f15\u3051\u306a\u3044\u6642\u306e\u7b46\u7b97\u3067\u3059\u3002\u96a3\u306e\u300c\u5341\u306e\u4f4d\u300d\u304b\u3089\u300c10\u306e\u307e\u3068\u307e\u308a\u300d\u3092\u501f\u308a\u3066\u304d\u3066\u8a08\u7b97\u3059\u308b\u300c\u304f\u308a\u4e0b\u304c\u308a\u300d\u3092\u5b66\u3073\u307e\u3059\u3002\u8db3\u3057\u7b97\u306e\u300c\u304f\u308a\u4e0a\u3052\u300d\u306e\u9006\u3067\u3001\u304a\u96a3\u304b\u3089\u5206\u3051\u3066\u3082\u3089\u3046\u30a4\u30e1 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