数学题巧妙计算46.3X0.56+5.38X5.6
巧妙计算 46.3X0.56+5.38X5.6-1X0.056
46.3X0.56+5.38X5.6-1X0.056 =(0.463+0.538-0.001)*56 =1*56 =56