题目内容
下面各题,怎样算简便就怎样算。
|
| (1)原式= |
(2)原式=(7+5)× =9 |
(3)原式=1- = |
| (4)原式= = |
(5)原式=2008×[15-(3.38+6.62)] =2008×5 =10040 |
| (6)原式=1-(1- =1-1+ = |
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题目内容
下面各题,怎样算简便就怎样算。
|
| (1)原式= |
(2)原式=(7+5)× =9 |
(3)原式=1- = |
| (4)原式= = |
(5)原式=2008×[15-(3.38+6.62)] =2008×5 =10040 |
| (6)原式=1-(1- =1-1+ = |