80÷20%= 0.4+0.73= 1-0.17=
5.4-0.9= 1-32%= 36×25%=
12.5×0.8= 0.78÷0.6= 0.87+1.23=
24×0.5= 7.2÷0.08= 36×75%= 4÷9=
38 ÷ 32 = 45 - 13 = 16 + 56 × 15 = 35 + 34 - 35 + 34 =
0.22= 800×5%= 23 ×30%= 13 : 15 =
5×3.14= 94.2÷3.14= 0.2×0.4= 2.5%×3=
20×70%= 70÷14= 913×2627= 30÷15%=
120×0.3%= 8-0.35= 3÷3%= 125%×0.8=