赚现金
5.6×0.375+×5.4-0.375×0.9
口算。3-= -= 6÷= (+)×21313×89= 0.9×99+0.9= 1-+=2.3+ 3.57= 0.5×(2.6-2.4)= 0.25×4÷0.25×4=
( +一)×48
3.6×0.25×4=
巧算。197+375+25468+182+118
试题篮