0.8+13.5=
5.6-0.8=
0.3×0.5=
2.9+1.08=
0.4×0.05=
0.75÷0.25=
0.12×2=
5-0.63=
7÷0.07=
1.1×800=
50×0.6=
0.84÷0.2=