题目内容
计算(要有必要的计算过程)
(1)(-64)+17+(-25)+23
(2)(-10)÷(-
)×5
(3)-23-24×(
-
+
)
(4)
-
.
(1)(-64)+17+(-25)+23
(2)(-10)÷(-
| 1 |
| 5 |
(3)-23-24×(
| 1 |
| 12 |
| 5 |
| 6 |
| 3 |
| 8 |
(4)
| 3 |
| ||
| 1 |
| 3 |
(1)原式=-64-25+40=-49;
(2)原式=50×5=250;
(3)原式=-8-24×
-24×(-
)-24×
=-8-2+20-9=1;
(4)原式=
-
=0.
(2)原式=50×5=250;
(3)原式=-8-24×
| 1 |
| 12 |
| 5 |
| 6 |
| 3 |
| 8 |
(4)原式=
| 1 |
| 3 |
| 1 |
| 3 |
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