5.6+4= 1.2×0.7= 8.2-8.2÷2=
3.8÷0.1= 17.3-2.2-7.8= 3.6×0.4÷3.6×0.4=
2.4×5= 0.3+0.3×0.3= 0.25×0.7×4 =
①9x÷0.3=15
②4(2+x)÷2=22
③54+3x=6x
④8x-0.6×4=1.6
①4.57-0.97+0.03
②3.5+3.5×9.8-3.5×0.8
③3.7×10.1
④[5.2-(2.5+7.5÷5)]÷0.01
0.4÷0.50.4×0.5 -5+7 0+9
80立方分米=立方米 8.7立方分米=立方厘米