36*(0.25+0.75-0.25+0.75) 用简便方法计算_数学解答

36*(0.25+0.75-0.25+0.75) 用简便方法计算

人气：370 ℃　时间：2020-03-26 14:09:41

解答

36*(0.25+0.75-0.25+0.75)
=36*(0.25+0.75)+36*(-0.25+0.75)
=36*1+36*0.5
=36+18
=54