7.4*1.12+0.73*8.8的简便算法咋算,急_数学解答

7.4*1.12+0.73*8.8的简便算法咋算,急

人气：327 ℃　时间：2020-06-05 08:43:57

解答

7.4*1.12+0.73*8.8
=7.3*1.12+0.1*1.12+7.3*0.88
=7.3*(1.12+0.88)+0.112
=7.3*2+0.112
=14.6+0.112
=14.712