46.1乘0.56加5.38乘5.6加1乘0.056 簡便計算

46.1×0.56+5.38×5.6+1×0.056
=46.1×0.56+53.8×0.56+0.1×0.56
=0.56×（46.1+53.8+0.1）
=0.56×100
=56