10÷0.5＝       3.5×0.2＝       0.63÷0.9＝       3.9×0.01＝

1.2×5＝       1.8×4＝       2.33×1＝       1.25×0.8＝

4.7+53＝       1÷0.01＝       0.99÷0.01＝       50×1.77×0.2＝