①3成=
②75%=_____折
③六成五=____%
④80%=_____成
⑤3%×5=
⑥2.11×0.1=
⑦3×22=
⑧3.1×0.3=
5x-12=48 x:=28:
0.8×0.4= 9.3-2.7= 8.4÷0.7= 0.32+0.6= 0.25×4×0=
- = × = ÷ = + = ( + )×20=
1+15%= 1÷50%= 37.5%+= 6-=
+= 9π= 1.25×0.8= :5=
1.38-0.03= ÷ = 0.28× =
36×25%= 0.72÷0.04= 0.3×2÷0.3×2=
妙想一家中午去这家饭馆用餐,结账时,服务员出示的账单上显示消费金额220元。选用哪种方式结算更划算?请写出你的想法。