7.5÷2.5×4=
1.9+0.42=
0.16×2=
4×0.25=
2.4×50=
2.7×0.3÷2.7×0.3=
24.56÷0.8=
12.1÷0.01=
0.5×0.5=
0.7÷3.5=
3.3-0.33=