题目内容
计算:
(1)[-22+(-2)3]-(-2)×(-3)
(2)(
+
-
)÷(-
)
(3)-1.6÷[(-
)2×(-3)3-22]
(4)-14+〔1-(1-0.5×2)〕÷|2-(-3)2|
(5)29
×(-5)(用简便方法计算,否则不得分)
(1)[-22+(-2)3]-(-2)×(-3)
(2)(
| 1 |
| 2 |
| 5 |
| 6 |
| 7 |
| 12 |
| 1 |
| 36 |
(3)-1.6÷[(-
| 2 |
| 3 |
(4)-14+〔1-(1-0.5×2)〕÷|2-(-3)2|
(5)29
| 14 |
| 15 |
(1)原式=(-4-8)-6
=-12-6
=-18;
(2)原式=(
+
-
)×(-36)
=-18-30+21
=-27;
(3)原式=-1.6÷(-
×27-4)
=-1.6÷(-12-4)
=-1.6÷(-16)
=-0.1;
(4)原式=-1+【1-(1-1)】÷|2-9|
=-1+1÷7
=-1+
=-
;
(5)原式=(30-
)×(-5)
=150+
=-149
.
=-12-6
=-18;
(2)原式=(
| 1 |
| 2 |
| 5 |
| 6 |
| 7 |
| 12 |
=-18-30+21
=-27;
(3)原式=-1.6÷(-
| 4 |
| 9 |
=-1.6÷(-12-4)
=-1.6÷(-16)
=-0.1;
(4)原式=-1+【1-(1-1)】÷|2-9|
=-1+1÷7
=-1+
| 1 |
| 7 |
=-
| 6 |
| 7 |
(5)原式=(30-
| 1 |
| 15 |
=150+
| 1 |
| 3 |
=-149
| 2 |
| 3 |
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