2﹣5%=
1÷25%=
32×25%=
①
②
③
④
⑤
⑥
⑦
⑧
×15= ×2= × = × =
÷ = ÷3= ÷5= ÷ =
0.37+1.8=
0.25×8=
5.1÷0.3=
1-7÷7=
1.25×4×8=
6.2-2.15
,如果四年级人数是180人,那么五年级人数是人。
÷ =
0.24×300=
4.2÷ =
× + ÷5=
0.9+99×0.9=
9.3÷0.03=
2.4× =
0.25×8×125%=