题目内容
计算
(1)-40-19+24;
(2)-7+13-6+20
(3)1+(-2)+|-2-3|-5
(4)
+(-
)-(-
)+(-
)-(+
).
(1)-40-19+24;
(2)-7+13-6+20
(3)1+(-2)+|-2-3|-5
(4)
| 1 |
| 2 |
| 2 |
| 3 |
| 4 |
| 5 |
| 1 |
| 2 |
| 1 |
| 3 |
(1)原式=-59+24
=-35;
(2)原式=-13+33
=20;
(3)原式=1-2+5-5
=-1;
(4)原式=[
+(-
)]+[(-
)-(+
)]-(-
)
=-1+
=-
.
=-35;
(2)原式=-13+33
=20;
(3)原式=1-2+5-5
=-1;
(4)原式=[
| 1 |
| 2 |
| 1 |
| 2 |
| 2 |
| 3 |
| 1 |
| 3 |
| 4 |
| 5 |
=-1+
| 4 |
| 5 |
=-
| 1 |
| 5 |
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