(31.25-7.64)+(4.75-4.36)怎么简便计算
问题描述:
(31.25-7.64)+(4.75-4.36)怎么简便计算
答
(31.25+4.75)-(7.64+4.36)=
答
(31.25-7.64)+(4.75-4.36)
=31.25-7.64+4.75-4.36
=(31.25+4.75)-(7.64+4.36)
=36-12
=24