2.5×40=
+ =
3.4× =
0.2÷ =
5- =
×60=
÷ =
×25%=
24÷3%=
2400÷150÷2=
0.2×54=
0.052=
6.7﹣2.3=
100÷0.1=
3.14×22=
3.6×=
350÷68≈
7
8
9
10
甲
20.4
17.6
20.5
23.1
乙
18.9
21.7
22.8
21.2
10﹣0.9= 28+82= 20×5%= +×0=
4.8÷0.8= += ×= 1÷-1=