计算 (72 + 25) × 40 答案:
40 × 72 + 40 × 25 = 3680 + 1000 = 4680
计算 (125 - 36) × 8
答案: 125 × 8 - 36 × 8 = 1000 - 288 = 712计算 (7 + 4) × 25
答案: 7 × 25 + 4 × 25 = 175 + 100 = 275计算 98 × (76 / 100)
答案: 98 × 0.76 = 74.48计算 42 × 65 - 32 × 42
答案: 42 × (65 - 32) = 42 × 33 = 1386计算 35 × (3 + 5)
答案: 35 × 3 + 35 × 5 = 105 + 175 = 280计算 (1 - 1 / 2010) × 2010
答案: 2010 - 1 = 2009计算 3 × (1 / 4) × 3
答案: 3 × 3 × (1 / 4) = 9 × (1 / 4) = 9 / 4计算 87 × (3 / 86)
答案: 87 × 3 / 86 = 261 / 86 = 29 / 10计算 (1 / 2 - 1 / 7) × 7 × 2
答案:
(1 / 2) × 7 × 2 - (1 / 7) × 7 × 2 = 7 - 2 = 5
这些题目涵盖了分数乘法分配律的正用、合并、含有1的乘法分配律等多种题型,通过简便运算可以快速得出答案。希望这些题目对你有所帮助!