题目内容
计算下列题.
(1)-22+(-2)3×5-(-0.28)÷(-2)2
(2)-22-(1-
×0.2)÷(-2)3.
(1)-22+(-2)3×5-(-0.28)÷(-2)2
(2)-22-(1-
| 1 |
| 5 |
(1)原式=-4-8×5-(-0.7)
=-4-40+0.7
=-43.3;
(2)原式=-4-
÷(-8)
=-4+
=-
.
=-4-40+0.7
=-43.3;
(2)原式=-4-
| 24 |
| 25 |
=-4+
| 3 |
| 25 |
=-
| 97 |
| 25 |
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