问题 解答题
口算我最棒!
12.5%×
1
5
=
1-20%=30÷100=
80%÷4=
3
4
×
1
12
=
1
5
×
3
5
=
270÷90%=200÷40%=3×60%=
答案

12.5%×
1
5
=
1
40
1-20%=0.8,30÷100=0.3,
80%÷4=0.2,
3
4
×
1
12
=
1
16
1
5
×
3
5
=
3
25
270÷90%=300,200÷40%=500,3×60%=1.8.

单项选择题
单项选择题 A3/A4型题