0.48×8.5+0.48×1.5=
7.8×0.8×1.25=7.8×(×)
7.2×13.7-4.7×7.2+7.2=
0.4×25= 9.9×10= 0.65×0.2=
50×0.74×0.2= 125×0.08= 80×0.05=
3.2×0.9+3.2= 0.8×1.25×6.2= 10.1×5.6-5.6×0.1=