问题 解答题
直接写结果:
2
7
×3=
1
3
=
1-
1
2
-
1
3
=
5
8
×
2
3
=
3-4×
3
4
=
1
6
×12=
2
9
÷
3
5
=
1
2
+
7
12
=
1-
1
6
-
1
3
=
3
4
-
1
2
=
答案

2
7
×3=
6
7
1
3
=3,
1-
1
2
-
1
3
=
1
6
5
8
×
2
3
=
5
12
3-4×
3
4
=0,
1
6
×12=2,
2
9
÷
3
5
=
10
27
1
2
+
7
12
=
13
12
1-
1
6
-
1
3
=
1
2
3
4
-
1
2
=
1
4

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