题目内容
计算:
(1)-
-(-
)+
+(-
)
(2)-6÷[(-
)2×(-3)3+2]
(3)(
-
-
)×(-60)
(4)-14÷(-5)2×(-
)+|0.8-1|
(1)-
| 3 |
| 5 |
| 2 |
| 7 |
| 3 |
| 7 |
| 2 |
| 5 |
(2)-6÷[(-
| 2 |
| 3 |
(3)(
| 2 |
| 3 |
| 1 |
| 12 |
| 1 |
| 15 |
(4)-14÷(-5)2×(-
| 5 |
| 3 |
(1)原式=-
+
+
-
=-
;
(2)原式=-6÷[
×(-27)+2]=-6÷(-10)=
;
(3)原式=-40+5+4=-31;
(4)原式=-1÷25×(-
)+0.2=
+
=
.
| 3 |
| 5 |
| 2 |
| 7 |
| 3 |
| 7 |
| 2 |
| 5 |
| 2 |
| 7 |
(2)原式=-6÷[
| 4 |
| 9 |
| 3 |
| 5 |
(3)原式=-40+5+4=-31;
(4)原式=-1÷25×(-
| 5 |
| 3 |
| 1 |
| 15 |
| 1 |
| 5 |
| 4 |
| 15 |
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