问题 解答题
3
4
×12=
2
7
+
2
7
+1=
3
5
×
1
3
=
7
9
-
1
3
=
1
10
×
1
2
=
7
18
=
3
4
×
1
3
=
42×
9
28
=
11×
9
44
=
3
13
×
26
37
=
5
6
×
8
45
=
3
5
×
1
4
=
7
15
×30=
63
8
×
4
9
=
23
24
×
8
29
=
答案

3
4
×12=9,
2
7
+
2
7
+1=1
4
7
3
5
×
1
3
=
1
5
7
9
-
1
3
=
4
9
1
10
×
1
2
=
1
20
7
18
=
7
2
3
4
×
1
3
=
1
4
42×
9
28
=
27
2
11×
9
44
=
9
4
3
13
×
26
37
=
6
37
5
6
×
8
45
=
4
27
3
5
×
1
4
=
3
20
7
15
×30=14,
63
8
×
4
9
=
7
2
23
24
×
8
29
=
23
87

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