34.5÷0.6=÷6
6.84÷7.2=÷72
19.76÷5.2=÷52
0.621÷0.03=÷3
7.2×0.97.2 1.04×3.573.57×0.14
5.245.24÷0.7 3.2÷0.013.2×0.01
a
30
m
b
6
50
0.1-0.01= 6.8÷10%= 3.6÷0.12= 398÷42≈
0.22= × = 24÷ = ×4÷ ×4=