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.
练习册系列答案
相关题目