问题 解答题
4
5
×15=
6
7
÷
2
7
=
1
2
÷50%=
8×25%=
4
21
×0×
10
11
=
1
5
-
1
7
=
0.5+
1
4
=
5
8
×
8
7
=
9
10
÷3=
1
3
-
1
5
)×30=
答案

4
5
×15=12,
6
7
÷
2
7
=3,
1
2
÷50%=1,
8×25%=2,
4
21
×0×
10
11
=0,
1
5
-
1
7
=
2
35
0.5+
1
4
=0.75,
5
8
×
8
7
=
5
7
9
10
÷3=
3
10
1
3
-
1
5
)×30=4.

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