题目内容
计算:
(1)(
-
+
)×(-42)
(2)-16-|-5|+2×(-
)2.
(1)(
1 |
3 |
5 |
21 |
3 |
14 |
(2)-16-|-5|+2×(-
1 |
2 |
(1)(
-
+
)×(-42)
=-14+10-9,
=-13;
(2)-16-|-5|+2×(-
)2
=-1-5+2×
=-5
.
1 |
3 |
5 |
21 |
3 |
14 |
=-14+10-9,
=-13;
(2)-16-|-5|+2×(-
1 |
2 |
=-1-5+2×
1 |
4 |
=-5
1 |
2 |
练习册系列答案
相关题目