题目内容
怎样简便就怎样算,并写出主要过程。
|
| (1)原式= =28+30-7 =51 |
(2)原式=10-1.95×2 =10-3.9 =6.1 |
| (3)原式=25+125×8×0.4 =25+400 =425 |
(4)原式= = =1 |
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题目内容
怎样简便就怎样算,并写出主要过程。
|
| (1)原式= =28+30-7 =51 |
(2)原式=10-1.95×2 =10-3.9 =6.1 |
| (3)原式=25+125×8×0.4 =25+400 =425 |
(4)原式= = =1 |