姓名 ______________________日期 ____________得分 ____ / 12
乘法运算律练习
乘法运算律 · 1–12
写出算式体现的运算律或性质。
1.(4 × 4) × 8 = 4 × (4 × 8)
2.2 × (12 + 3) = 2 × 12 + 2 × 3
3.(10 × 9) × 4 = 10 × (9 × 4)
4.3 × (12 + 7) = 3 × 12 + 3 × 7
5.(4 × 8) × 9 = 4 × (8 × 9)
6.7 × (5 + 8) = 7 × 5 + 7 × 8
7.3 × (8 + 9) = 3 × 8 + 3 × 9
8.9 × (12 + 3) = 9 × 12 + 9 × 3
9.2 × (12 + 8) = 2 × 12 + 2 × 8
10.12 × (9 + 7) = 12 × 9 + 12 × 7
11.3 × (9 + 9) = 3 × 9 + 3 × 9
12.6 × (9 + 8) = 6 × 9 + 6 × 8
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