(销售率= ×100%)
8× = 2.8﹣ = ×1= ÷9= ×20=
+ = ÷ = + = ×0.2= 1÷ =
÷9= × = ÷ = 1﹣ = 150%﹣150%=
24÷ = ÷4= 0÷ = × = ×24× =
×0= × = 6 = 3.6× = ×70=
+ = ﹣0= 55%﹣ = 2.4÷0.4= 2÷0.5=
8:=4 吨=千克 52cm=m
4:5=20: dm2=cm2 1.2=%
×2.3=230 12 ÷7= × =25%
12分=时 24:18=:6