问题 解答题
口算显身手.
3
8
×2=
7
8
×
8
7
=
1
3
×
1
2
=
12-
3
7
=
5
12
×
1
5
=
7
8
=
14
15
×0=
1
3
=
16
5
×
5
16
=
答案

3
8
×2=
3
4
7
8
×
8
7
=1,
1
3
×
1
2
=
1
6
12-
3
7
=11
4
7
5
12
×
1
5
=
1
12
7
8
=
7
8
14
15
×0=0,
1
3
=1,
16
5
×
5
16
=1.

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