题目内容
计算题:
(1)(-7)×(-5)-90÷(-15);
(2)-14-
×[2-(-3)2].
(1)(-7)×(-5)-90÷(-15);
(2)-14-
| 1 |
| 6 |
(1)(-7)×(-5)-90÷(-15)
=35-(-6)
=41.
(2)-14-
×[2-(-3)2]
=-1-
×[2-9]=-1-(-
)=
.
=35-(-6)
=41.
(2)-14-
| 1 |
| 6 |
=-1-
| 1 |
| 6 |
| 7 |
| 6 |
| 1 |
| 6 |
练习册系列答案
相关题目