口算:
0.4×0.02= 3.2+6.8= 0.39÷1.3= 2.4×2.5=
1÷0.125= 1﹣0.25= 0.62÷0.1= 99×0.25=
1.2×0.4+0.4×1.3= 4×(1.5+0.25)=
口算:
0.4×0.02= 3.2+6.8= 0.39÷1.3= 2.4×2.5=
1÷0.125= 1﹣0.25= 0.62÷0.1= 99×0.25=
1.2×0.4+0.4×1.3= 4×(1.5+0.25)=