题目内容
聪明会计师。(用简便方法计算下面各题)
|
| (1)原式= =4.6 |
(2)原式=0.625×(0.5+1+0.5) =0.625×2 =1.25 |
| (3)原式= =1-0.5 =0.5 |
(4)原式=7.2+2.8+ =10+1 =11 |
| (5)原式=4.2+5.8+7.1+2.9 =10+10 =20 |
(6)原式=34× =2+ =8 |
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题目内容
聪明会计师。(用简便方法计算下面各题)
|
| (1)原式= =4.6 |
(2)原式=0.625×(0.5+1+0.5) =0.625×2 =1.25 |
| (3)原式= =1-0.5 =0.5 |
(4)原式=7.2+2.8+ =10+1 =11 |
| (5)原式=4.2+5.8+7.1+2.9 =10+10 =20 |
(6)原式=34× =2+ =8 |