问题 解答题
直接得数.
3
7
×21=
9
10
×
5
6
=
15÷
3
5
=
4
9
÷
8
15
1-65%=1+65%=
5
12
÷
5
8
=
4
11
×
3
8
=
答案

3
7
×21=9,
9
10
×
5
6
=
3
4
15÷
3
5
=25,
4
9
÷
8
15
=
5
6
1-65%=0.35,1+65%=1.65,
5
12
÷
5
8
=
2
3
4
11
×
3
8
=
3
22

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