Question

2.25乘一点八加1.25乘0.18用简便算法怎么算

Answer 1

2.25*1.8+1.25*0.18
=2.25*1.8+0.125*1.8
=1.8*(2.25+0.125)
=9/5(9/4+1/8)
=9/5(18/8+1/8)
=9/5*19/8
=171/40
用分数来表示最简单，这就是最简结果