题目内容
计算:
(1)-16+23+(-17)-(-7)
(2)-2
+
÷(-2)×(-
)
(3)-33-(
+
-
)×(-24)
(4)(-1)100×|-5|-4×(-3)-42.
(1)-16+23+(-17)-(-7)
(2)-2
| 1 |
| 2 |
| 1 |
| 2 |
| 8 |
| 3 |
(3)-33-(
| 1 |
| 2 |
| 5 |
| 6 |
| 7 |
| 12 |
(4)(-1)100×|-5|-4×(-3)-42.
(1)原式=-16+23-17+7=30-33=-3;
(2)原式=-2
+
×
×
=-2
+
=-
;
(3)原式=-27+12+20-14=-9;
(4)原式=1×5+12-16=5+12-16=1.
(2)原式=-2
| 1 |
| 2 |
| 1 |
| 2 |
| 1 |
| 2 |
| 8 |
| 3 |
| 1 |
| 2 |
| 2 |
| 3 |
| 11 |
| 6 |
(3)原式=-27+12+20-14=-9;
(4)原式=1×5+12-16=5+12-16=1.
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