问题 解答题
1
2
÷2=
1
3
+
1
4
=
10÷
5
7
=
5
12
×6=
3
5
×
1
2
=
1
9
÷
1
3
=
5
6
=
15×(
4
5
-
2
3
)=
答案

1
2
÷2=
1
4
1
3
+
1
4
=
7
12
10÷
5
7
=14,
5
12
×6=
5
2
3
5
×
1
2
=
3
10
1
9
÷
1
3
=
1
3
5
6
=
15
2
15×(
4
5
-
2
3
)=2.

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