1.8*25+24/1.5用简便方法怎么做
问题描述：
1.8*25+24/1.5用简便方法怎么做
答
1.8*25+24/1.5
=(2-0.2)*25+(3*8)/(3*0.5)
=2*25-0.2*25+8/0.5
=50-5+16
=45+16
=61