4.25+4⼀5+1.2+3⼀4怎么简便计算?

2025-06-21 16:41:30
推荐回答(2个)
回答1:

4.25+4/5+1.2+3/4
=4.25+0.8+1.2+0.75
=(4.25+0.75)+(0.8+1.2)
=5+2
=7

回答2:

4.25=17/4,1.2=6/5,6/5+4/5+17/4+3/4=7