问题 解答题
口算我最棒!
18×
7
9
=
3
4
×
5
9
=
1
5
=
4
7
÷
3
7
=
0.6÷
2
5
=
21÷
7
9
=
4
5
÷12
=
18×
1
4
=
6
11
×
5
12
=
答案

18×
7
9
=14,
3
4
×
5
9
=
5
12
1
5
=
3
5
4
7
÷
3
7
=
4
3
0.6÷
2
5
=
3
2
21÷
7
9
=27,
4
5
÷12
=
1
15
18×
1
4
=
9
2
6
11
×
5
12
=
5
22

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