3.42乘76.3加57.6乘7.63加91.8乘2.3.7怎么算,要简便运算,急!谢谢大家啦!_数学解答

3.42乘76.3加57.6乘7.63加91.8乘2.3.7怎么算,要简便运算,急!谢谢大家啦!

人气：119 ℃　时间：2020-01-29 02:40:04

解答

3.42乘76.3加57.6乘7.63加91.8乘2.3.7
=7.63x(34.2+57.6)+91.8x2.37
=7.63x91.8+91.8x2.37
=(7.63+2.37)x91.8
=10x91.8
=918