题目内容
脱式计算,能简算的要简算。
|
| (1)原式=75.8-(2.25+7.75) =65.8 |
(2)原式=37.12-13.96 =23.16 |
| (3)原式=8×1.25+0.8×1.25 =10+1 =11 |
(4)原式=0.4×7×1.4+0.4×9×1.2 =0.4×(9.8+10.8) =8.24 |
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题目内容
脱式计算,能简算的要简算。
|
| (1)原式=75.8-(2.25+7.75) =65.8 |
(2)原式=37.12-13.96 =23.16 |
| (3)原式=8×1.25+0.8×1.25 =10+1 =11 |
(4)原式=0.4×7×1.4+0.4×9×1.2 =0.4×(9.8+10.8) =8.24 |