1.255.6+2.254.4用脱失计算怎样才能用到5.6+4.4进行脱算

分类: 作业答案 • 2022-05-02 08:51:41

问题描述：

1.25*5.6+2.25*4.4用脱失计算怎样才能用到5.6+4.4进行脱算

答

1.25*5.6+2.25*4.4
=1.25*5.6+（1+1.25）*4.4
=1.25*5.6+1.25*4.4+4.4
=1.25*（5.6+4.4）+4.4
=1.25*10+4.4
=12.5+4.4
=16.9

1.25*5.6+2.25*4.4用脱失计算 怎样才能用到5.6+4.4进行脱算