250×0.04= 5.8÷0.29= 5.5÷0.1=
0.27÷0.9= 0.6×0.5= 1.2-0.2÷0.2=
0.25×28= 500×1%= 0.81× = 0.32-0.22=
8×4÷8×4= 1÷3× = 0.8÷0.01= 98÷22=