46.9*3.7+46.9*5.3+46.9 3.79*78+5.21*78+78 126.5*0.25*40 0.96*0.2*5 45.4*10.1

46.9*3.7+46.9*5.3+46.9 ＝46.9*（3.7+5.3+1）＝46.9*10＝4693.79*78+5.21*78+78 ＝（3.79+5.21+1）*78＝10*21＝210126.5*0.25*40＝ 126.5*10*0.25*4＝1265*1＝12650.96*0.2*5 ＝0.96*1＝0.9645.4*10.1＝45.4*（10+0...