4最小合数 0.33 (n>0)
①3成=
②75%=_____折
③六成五=____%
④80%=_____成
⑤3%×5=
⑥2.11×0.1=
⑦3×22=
⑧3.1×0.3=
0.52-0.42=
5÷20%=
5m:35cm(求比值)=
长/cm
9
8
7
6
5
宽/cm
1
2
面积/cm2
16
时=分 dm2=cm2
- = × = 80÷10%= 42×3.14=
30%+0.45= 3.6÷0.18= 2- = 6- - =