46.3*0.56+5.38*5.6-0.056的简便计算,急

46.3*0.56+5.38*5.6-0.056=
46.3×0.56+53.8×0.56-0.1×0.56=(46.3+53.8-0.1)*0.56＝100*0.56=56我是5.38，不是53.8你在好好看看我的化法5.38到53.8增加十倍而5.6减小十倍可抵消