题目内容
计算
(1)-3-(-4)+7;
(2)-24×(-
+
-
);
(3)|-
|×(-
)÷(
-2)2;
(4)4
×[-32×(-
)2+0.8]÷(-
).
(1)-3-(-4)+7;
(2)-24×(-
| 1 |
| 2 |
| 3 |
| 4 |
| 1 |
| 3 |
(3)|-
| 13 |
| 6 |
| 12 |
| 13 |
| 1 |
| 2 |
(4)4
| 1 |
| 2 |
| 1 |
| 3 |
| 3 |
| 5 |
(1)原式=-3+4+7=8;
(2)原式=12-18+8=2;
(3)原式=-
×
÷
=-
×
×
=-
;
(4)原式=
×(-9×
+0.8)×(-
)=
×(-
)×(-
)=
.
(2)原式=12-18+8=2;
(3)原式=-
| 13 |
| 6 |
| 12 |
| 13 |
| 9 |
| 4 |
| 13 |
| 6 |
| 12 |
| 13 |
| 4 |
| 9 |
| 8 |
| 9 |
(4)原式=
| 9 |
| 2 |
| 1 |
| 9 |
| 5 |
| 3 |
| 9 |
| 2 |
| 1 |
| 5 |
| 5 |
| 3 |
| 3 |
| 2 |
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