问题 解答题
计算
4
5
÷
2
15
2
3
×
9
10
3
8
÷
5
8
4
7
×
7
8
4
5
÷
1
2
2
3
1
3
×
2
5
16÷
4
5
5
9
÷
5
18
1
2
+
1
3
5
12
÷
1
8
1
3
÷
1
2
答案

4
5
÷
2
15
=6;
2
3
×
9
10
=
3
5
3
8
÷
5
8
=
3
5
4
7
×
7
8
=
1
2
4
5
÷
1
2
=
8
5
2
3
=
3
2
1
3
×
2
5
=
2
15
16÷
4
5
=20;
5
9
÷
5
18
=2;
1
2
+
1
3
=
5
6
5
12
÷
1
8
=
10
3
1
3
÷
1
2
=
2
3

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