发布网友 发布时间:2024-10-24 04:22
共5个回答
热心网友 时间:2024-11-07 22:21
解:1/2+2/5+3/10
=5/10+3/10+2/5
=4/5+2/5
=6/5
=1右1/5
望采纳,若不懂,请追问。
热心网友 时间:2024-11-07 22:22
1/2+2/5+3/10
=5/10+4/10+3/10
=12/10
=1又1/5追问四分之三-三分之一-八分之三 简便计算
追答3/4×1/3-3/8
=1/4-3/8
=-1/8
热心网友 时间:2024-11-07 22:22
=5/10+3/10+2/5=8/10+2/5=4/5+2/5=6/5
热心网友 时间:2024-11-07 22:23
先通分:5/10+4/10+3/10=12/10
约分之后等于6/5
热心网友 时间:2024-11-07 22:23
1/2+2/5+3/10
=1*5/2*5+2*2/5*2+3/10
=5/10+4/10+3/10
=(5+4+3)/10
=12/10
=1又5分之1