计算：
12×2.5= 7.5×0.4= 1÷0.625= 8.4÷4.2=
24÷4+56÷4= 2.5+2.5×3= 0.25×8= 12.5÷2.5=
口算
1.6÷0.4= 0.77×1= 7.5÷3= 1.5×6=
0.125×8= 31.4÷3.14= 1.4×10= 0.1×6.4=
3.6×0.2= 1.5÷1.5= 2.8÷0.4= 2.3+1.8=
10÷0.1= 4.16÷1= 0.45×0.1= 0.2×11=
3.6÷2= 1.2÷0.02= 72÷0.9= 25×0.4=
直接写出得数．
1÷0.125= 1.6×0.5= 0.25÷0.1= 4.8÷0.48×0.01=
0.65×0.2= 10﹣0.99= 8.8﹣7.8= 5.4×2÷5.4×2=
直接写出得数．
1÷0.125= 1.6×0.5= 0.25÷0.1= 4.8÷0.48×0.01=
0.65×0.2= 10﹣0.99= 8.8﹣7.8= 5.4×2÷5.4×2=
口算
8×0.4= 0.1﹣0.01= 1÷0.25= 2.5+0.6=
0.12×0= 0.63÷0.9= 5.2+3.8= 5﹣0.64=
8.7﹣0.55﹣0.45= 1÷0.125÷8=
是多少？