题目内容
计算
(1)(
-
-
)×24
(2)(-5+3)2÷
-42.
(1)(
| 1 |
| 6 |
| 1 |
| 4 |
| 1 |
| 12 |
(2)(-5+3)2÷
| 4 |
| 3 |
(1)原式=
×24-
×24-
×24
=4-6-2
=-4;
(2)原式=(-2)2÷
-16
=4×
-16
=3-16
=-13.
| 1 |
| 6 |
| 1 |
| 4 |
| 1 |
| 12 |
=4-6-2
=-4;
(2)原式=(-2)2÷
| 4 |
| 3 |
=4×
| 3 |
| 4 |
=3-16
=-13.
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