题目内容
计算
(1)0-16+(-29)-(-7)-(+11)
(2)-
-21
+3
-2
(3)(
-
+
)×(-30)
(4)-14-[-2+(1-0.2÷
)×(-3)]
(5)(+23)×
+(-57)×
+(-26)×
.
(1)0-16+(-29)-(-7)-(+11)
(2)-
| 1 |
| 4 |
| 2 |
| 3 |
| 1 |
| 4 |
| 1 |
| 3 |
(3)(
| 2 |
| 5 |
| 1 |
| 15 |
| 5 |
| 6 |
(4)-14-[-2+(1-0.2÷
| 3 |
| 5 |
(5)(+23)×
| 1 |
| 4 |
| 1 |
| 4 |
| 1 |
| 4 |
(1)原式=-16-29+7-11
=-49;
(2)原式=3-24
=-21;
(3)原式=-12+2-25
=-35;
(4)原式=-1-[-2+
×(-3)]
=-1-[-2-2]
=-1+4
=3;
(5)原式=(23-57-26)×
=-15.
=-49;
(2)原式=3-24
=-21;
(3)原式=-12+2-25
=-35;
(4)原式=-1-[-2+
| 2 |
| 3 |
=-1-[-2-2]
=-1+4
=3;
(5)原式=(23-57-26)×
| 1 |
| 4 |
=-15.
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