1.25×0.8=
17.1-(17.1-15)=
1.1-0.8=
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=