10道乘法结合律简便运算及答案四年级下册
以下是十道乘法结合律简便运算及答案(以小学四年级下册内容为基础): 1. 9 × 6 × 5 = 9 × (6 × 5) = 270 2. 3 × 7 × 8 = 3 × (7 × 8) = 168 3. 4 × 6 × 9 = 4 × (6 × 9) = 216 4. 5 × 8 × 2 = 5 × (8 × 2) = 80 5. 6 × 3 × 4 = 6 × (3 × 4) = 72 6. 7 × 2 × 9 = 7 × (2 × 9) = 126 7. 8 × 4 × 3 = 8 ×...