问题 解答题
直接写出得数.
2
9
×
3
5
=
3
4
×
1
2
×
4
9
=
1
5
÷3=
12×
3
4
=
3
8
+
5
8
-
3
8
+
5
8
=
20÷
4
9
=
18÷
3
5
÷
2
3
=
2
3
×
7
8
=
2
13
=
4
5
×
1
4
÷
4
5
×
1
4
=
答案

2
9
×
3
5
=
2
15
3
4
×
1
2
×
4
9
=
1
6
1
5
÷3=
1
15
12×
3
4
=9;
3
8
+
5
8
-
3
8
+
5
8
=1
1
4
20÷
4
9
=45;
18÷
3
5
÷
2
3
=45;
2
3
×
7
8
=
7
12
2
13
=0;
4
5
×
1
4
÷
4
5
×
1
4
=
1
16

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