题目内容
用你喜欢的方法计算
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| (1)原式=(0.25×0.4)×(1.25×0.8) =0.1×1 =0.1 |
(2)原式=1.5×[4+12] =1.5×16 =24 |
| (3)原式=1.23×1.6+1.23×0.4 =1.23×(1.6+0.4) =2.46 |
(4)原式=15.4×(1.7+9.3-1) =15.4×10 =154 |
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题目内容
用你喜欢的方法计算
|
| (1)原式=(0.25×0.4)×(1.25×0.8) =0.1×1 =0.1 |
(2)原式=1.5×[4+12] =1.5×16 =24 |
| (3)原式=1.23×1.6+1.23×0.4 =1.23×(1.6+0.4) =2.46 |
(4)原式=15.4×(1.7+9.3-1) =15.4×10 =154 |