8.4-5.6= 1.25×0.08= ÷8=
4÷0.2= 50×4%= 7× ÷7× =
1.85﹣+= 1÷×= +0.375=
2.4﹣= (+)×2.4= 5÷×5÷=
10×45%= 1.25×8= 40×(1﹣20%)=