某地修一条水渠,第一天挖了十分之九千米,第二天挖了五分之二千米,还剩二又二分之一千米.这条水渠全长多少千米?

来源：学生作业帮助网 编辑：六六作业网 时间：2024/12/23 15:18:32
某地修一条水渠,第一天挖了十分之九千米,第二天挖了五分之二千米,还剩二又二分之一千米.这条水渠全长多少千米?某地修一条水渠,第一天挖了十分之九千米,第二天挖了五分之二千米,还剩二又二分之一千米.这条水

某地修一条水渠,第一天挖了十分之九千米,第二天挖了五分之二千米,还剩二又二分之一千米.这条水渠全长多少千米?
某地修一条水渠,第一天挖了十分之九千米,第二天挖了五分之二千米,还剩二又二分之一千米.这条水渠全长多
少千米?

某地修一条水渠,第一天挖了十分之九千米,第二天挖了五分之二千米,还剩二又二分之一千米.这条水渠全长多少千米?
全长=9/10+2/5+2又1/2=3又4/5千米

9/10+2/5+2又1/2=3.8千米
答这条水渠全长3.8千米

这样简单的分数加法也不会？
全长2.8千米也就是二又五分之四千米

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