题目内容
计算:
(1)-14-(1-0.5)×
×[2-(-3)2]
(2)(-2)÷[(-
)2×(
)3]×|-
|-(-5).
(1)-14-(1-0.5)×
| 1 |
| 3 |
(2)(-2)÷[(-
| 1 |
| 2 |
| 1 |
| 2 |
| 3 |
| 4 |
(1)原式=-1-
×
×(-7)
=-1+
=
;
(2)原式=(-2)÷(
×
)×
+5
=(-2)×32×
+5
=-48+5
=-43.
| 1 |
| 2 |
| 1 |
| 3 |
=-1+
| 7 |
| 6 |
=
| 1 |
| 6 |
(2)原式=(-2)÷(
| 1 |
| 4 |
| 1 |
| 8 |
| 3 |
| 4 |
=(-2)×32×
| 3 |
| 4 |
=-48+5
=-43.
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