问题 解答题
口算:
4+
3
5
=
2-
5
6
=
2
7
×
7
8
=
2
7
=
5
8
÷5=
5
6
×
2
5
=
1
2
-
1
6
=
1
3
+
1
5
=
答案

4+
3
5
=4
3
5
2-
5
6
=1
1
6
2
7
×
7
8
=
1
4
2
7
=21,
5
8
÷5=
1
8
5
6
×
2
5
=
1
3
1
2
-
1
6
=
1
3
1
3
+
1
5
=
8
15
故答案为:4
3
5
1
1
6
1
4
,21,
1
8
1
3
1
3
8
15

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