题目内容
计算:
(1)(-1)+(-2)-(-3)
(2)-2.5÷(-
)×(-
)
(3)(-1)2013-2-(-5)×2
(4)(-2)2+(-2)÷(-
)+|-
|×(-24).
(1)(-1)+(-2)-(-3)
(2)-2.5÷(-
| 5 |
| 16 |
| 1 |
| 8 |
(3)(-1)2013-2-(-5)×2
(4)(-2)2+(-2)÷(-
| 2 |
| 3 |
| 1 |
| 16 |
(1)原式=-3+3=0;
(2)原式=-
×
×
=-1;
(3)原式=-1-2+10=7;
(4)原式=4+3-1=6.
(2)原式=-
| 5 |
| 2 |
| 16 |
| 5 |
| 1 |
| 8 |
(3)原式=-1-2+10=7;
(4)原式=4+3-1=6.
练习册系列答案
相关题目