摘要:18.计算:25÷23= .
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计算:
(1)-6+(-4)-(-2)
(2)(-
)-(-
)+(-
)+0.6
(3)(-
)×0.125×(-2
)×(-8)
(4)|-2
|÷(-3)×
(5)(-30)×(
-
-
)
(6)-3-[-5+(1-
×1
)÷(-2)].
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(1)-6+(-4)-(-2)
(2)(-
| 1 |
| 3 |
| 2 |
| 5 |
| 2 |
| 3 |
(3)(-
| 3 |
| 7 |
| 1 |
| 3 |
(4)|-2
| 1 |
| 4 |
| 1 |
| 3 |
(5)(-30)×(
| 1 |
| 3 |
| 5 |
| 6 |
| 3 |
| 10 |
(6)-3-[-5+(1-
| 1 |
| 2 |
| 1 |
| 5 |