口算我最棒.690÷3= 3600÷6= 30+50= 400÷5=56÷7+8= 240÷6= 30×4= 538÷6≈475÷8≈ 0÷(54﹣45)=
简便计算. 0.6×47+52×+60%5.72﹣1.84﹣1.16 7×6+2×6.
合理灵活地计算下列各题. 8.75﹣5.375+2.25+4.125×〔(+)÷〕45×+×554.3﹣(+2.4÷)
(1)0.125×0.32×5= (2)= (3)= (4)35000÷28×8= (5)222×555= (6)= (7)0.125×0.25×0.5×64= (8)=
计算: (1)+﹣(2)3.2﹣0.85﹣1(3)3.2×﹣÷2 (4)1.725×4×0.5(5)(+)÷(6)×6%
脱式计算 460+540÷20×598.7×0.9+9.87 (11÷46+18÷23)×92.