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_数学解答

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

人气：352 ℃　时间：2020-10-02 02:09:25

解答

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