9﹣ = × = 1÷1%= 1÷ =
7×60%= × = 15.7÷3.14= 63×60%+ ×37=
0.2:0.18 17:51 :
扁肉
大碗5. 5元/碗
小碗3. 5元/碗
生扁肉
22. 5元/200g
30元/500g
①
②