0.4572+450.18+4.5简便方法的答案

分类: 作业答案 • 2021-12-20 01:39:57

问题描述：

0.45*72+45*0.18+4.5简便方法的答案

答

0.45*72+45*0.18+4.5
=0.45*72+0.45*0.18*100+0.45*10
=0.45*72+0.45*18+0.45*10
=0.45*(72+18+10)
=0.45*100
=45

0.45*72+45*0.18+4.5简便方法的答案