问题:
(1)计算: 9
45
÷3
15
×
4
3
2
2
3
-2
32
(2)计算: (
3
+
2
+
5
)(
3
-
2
-
5
)
(1)计算: 9
÷3
×
-2
(2)计算: (
+
+
)(
-
-
)
45 |
15 |
4 |
3 |
2
|
32 |
(2)计算: (
3 |
2 |
5 |
3 |
2 |
5 |
参考答案: