妈妈买了4千克苹果,付出20元,找回5元6角,每千克苹果的价格是多少元?(用两种方法解答.)
人气:488 ℃ 时间:2019-08-22 18:53:52
解答
(20-5.6)/4=3.6
(20-5.6)/4=20/4-5.6/4=5-1.4=3.6
推荐
猜你喜欢
- 现有碳酸氢钠和碳酸钠的混合物2.74克,溶于水配成100ml溶液,其中c(Na+)=0.4mol/L,
- 比较5.4克水与0.2摩尔硫酸,共含氧原子_____mol,含____个
- when i went to say goodbye to anna,she __the piano a.is playing b.plays c.was playing d.played
- When you are in trouble,your friends can help you get through it.中“get through"是什么意思?
- 数学中神马时候用或神马时候用和俩连接两个数字
- 某服装厂加工一批西服,每15米布料能裁上衣10件或裤子13件,现在有布料345米,上衣和裤子配套分配裁上衣和
- .急.厘米换算成米
- 英语作文my favourite season