{"id":184,"date":"2026-05-25T16:11:26","date_gmt":"2026-05-25T07:11:26","guid":{"rendered":"https:\/\/www.risu-japan.com\/drill\/?p=184"},"modified":"2026-05-25T16:11:26","modified_gmt":"2026-05-25T07:11:26","slug":"mixed-addition-subtraction","status":"publish","type":"drill","link":"https:\/\/www.risu-japan.com\/drill\/grade1\/three-numbers\/mixed-addition-subtraction\/","title":{"rendered":"\u8db3\u3057\u7b97\u30fb\u5f15\u304d\u7b97\u304c\u6df7\u3058\u3063\u305f\u8a08\u7b97"},"content":{"rendered":"<p><!-- body-start 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display=\"inline\"><mn>5<\/mn><mo>+<\/mo><mn>2<\/mn><mo>&#8211;<\/mo><mn>3<\/mn><\/math><\/span>\u3068\u306a\u308a\u3001\u5de6\u304b\u3089\u9806\u756a\u306b\u8a08\u7b97\u3059\u308b\u3068<span class=\"risu-math risu-math--inline\"><math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" display=\"inline\"><mn>5<\/mn><mo>+<\/mo><mn>2<\/mn><mo>=<\/mo><mn>7<\/mn><\/math><\/span>\u3001<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>3<\/mn><mo>=<\/mo><mn>4<\/mn><\/math><\/span>\u3067\u7b54\u3048\u306f4\u5339\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n<\/p><\/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>\u3064\u304e\u306e \u3051\u3044\u3055\u3093\u3092 \u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n<div 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