(完整word版)六年级分数乘除法应用题类型总结(经典),推荐文档.pdf
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1、分数应用题类型总结第一类、一个数的几分之几。已知单位“1”,用乘法。“是”“比”“占”后面是单位1,已知单位“1”,用乘法。“是比占”相当于“=”“的”相当于“”例 1:已知甲数是 乙数的53,乙数是 25,求甲数是多少?甲数=乙数 53即 2553=151.(1)某校有男生 240 人,女生是男生的65,女生有多少人?第二类、一个数的几分之几。未知单位“1”,用除法。“是”“比”“占”后面是单位1,未知单位“1”,用除法。“是比占”相当于“=”“的”相当于“”例:甲数是乙数的53,甲数是 15,求乙是多少?甲=乙 53即:1553=251、果园里有桃树 120 棵,桃树的棵数是梨树的41,果
2、园里有桃树多少棵?第三类、两步乘除此类型的题是第一第二类题目综合运用,一般要经过两步才能得到答案。1、A、小明有图书 48 本,小芳的图书是小明的65,小利的图书是小芳的43,小利有图书多少本?分析:这种类型的题目要倒着分析,从问题开始分析。思路:a 看问题求小利有图书多少本;b小利的图书是小芳的3/4;从 ab 看,如果知道小芳的图书本数,即可求出小利有多少本图书,小芳的图书是单位 1,小利图书=小芳图书 1/4,从题目看,小芳的图书本数没有直接给出,现在还不能求出小利的图书本数,接着看题目。精品资料-欢迎下载-欢迎下载 名师归纳-第 1 页,共 5 页 -C 小芳的图书是小明的5/6;如果
3、知道小明的图书本数即可求出小芳的图书本数,小明的图书是单位1,小芳图书=小明图书 5/6,随之可求出小利的图书本数;d 最后,彩蛋来了,“小明有图书48 本”有了这个条件,根据c 可求出小芳的图书本数,根据b 可求出小利图书本数。看明白了吗?从问题开始分析,根据条件一步步得到答案,像柯南找破案一样,很酷吧。自己尝试做一下吧B、小利有图书 45 本,小芳的图书是小明的65,小利的图书是小芳的43,小明有图书多少本?2、A、果园里有桃树80 棵,梨树的棵树是桃树的169,又是苹果树的3215,果园里有多少棵苹果树?B、果园里有桃树 45 棵,桃树的棵数是梨树的169,苹果树的棵数是梨树的2017,
4、果园里有多少棵苹果树?第四类、比单位“1”多或者少,已知单位“1”.甲比乙多几分之几,已知乙,求甲。甲=乙(1+几分之几)1、商店运来一批水果,其中苹果有180kg,梨比苹果多91,苹果多少千克?2、林场有 400 棵杨树,槐树的棵数比杨树多81,林场有多少棵槐树?精品资料-欢迎下载-欢迎下载 名师归纳-第 2 页,共 5 页 -文档编码:CC7R10U2P6L7 HU9J9W1R7P2 ZI10S5H4Z1R2文档编码:CC7R10U2P6L7 HU9J9W1R7P2 ZI10S5H4Z1R2文档编码:CC7R10U2P6L7 HU9J9W1R7P2 ZI10S5H4Z1R2文档编码:CC7
5、R10U2P6L7 HU9J9W1R7P2 ZI10S5H4Z1R2文档编码:CC7R10U2P6L7 HU9J9W1R7P2 ZI10S5H4Z1R2文档编码:CC7R10U2P6L7 HU9J9W1R7P2 ZI10S5H4Z1R2文档编码:CC7R10U2P6L7 HU9J9W1R7P2 ZI10S5H4Z1R2文档编码:CC7R10U2P6L7 HU9J9W1R7P2 ZI10S5H4Z1R2文档编码:CC7R10U2P6L7 HU9J9W1R7P2 ZI10S5H4Z1R2文档编码:CC7R10U2P6L7 HU9J9W1R7P2 ZI10S5H4Z1R2文档编码:CC7R10U2P
6、6L7 HU9J9W1R7P2 ZI10S5H4Z1R2文档编码:CC7R10U2P6L7 HU9J9W1R7P2 ZI10S5H4Z1R2文档编码:CC7R10U2P6L7 HU9J9W1R7P2 ZI10S5H4Z1R2文档编码:CC7R10U2P6L7 HU9J9W1R7P2 ZI10S5H4Z1R2文档编码:CC7R10U2P6L7 HU9J9W1R7P2 ZI10S5H4Z1R2文档编码:CC7R10U2P6L7 HU9J9W1R7P2 ZI10S5H4Z1R2文档编码:CC7R10U2P6L7 HU9J9W1R7P2 ZI10S5H4Z1R2文档编码:CC7R10U2P6L7 HU
7、9J9W1R7P2 ZI10S5H4Z1R2文档编码:CC7R10U2P6L7 HU9J9W1R7P2 ZI10S5H4Z1R2文档编码:CC7R10U2P6L7 HU9J9W1R7P2 ZI10S5H4Z1R2文档编码:CC7R10U2P6L7 HU9J9W1R7P2 ZI10S5H4Z1R2文档编码:CC7R10U2P6L7 HU9J9W1R7P2 ZI10S5H4Z1R2文档编码:CC7R10U2P6L7 HU9J9W1R7P2 ZI10S5H4Z1R2文档编码:CC7R10U2P6L7 HU9J9W1R7P2 ZI10S5H4Z1R2文档编码:CC7R10U2P6L7 HU9J9W1R
8、7P2 ZI10S5H4Z1R2文档编码:CC7R10U2P6L7 HU9J9W1R7P2 ZI10S5H4Z1R2文档编码:CC7R10U2P6L7 HU9J9W1R7P2 ZI10S5H4Z1R2文档编码:CC7R10U2P6L7 HU9J9W1R7P2 ZI10S5H4Z1R2文档编码:CC7R10U2P6L7 HU9J9W1R7P2 ZI10S5H4Z1R2文档编码:CC7R10U2P6L7 HU9J9W1R7P2 ZI10S5H4Z1R2文档编码:CC7R10U2P6L7 HU9J9W1R7P2 ZI10S5H4Z1R2文档编码:CC7R10U2P6L7 HU9J9W1R7P2 ZI
9、10S5H4Z1R2文档编码:CC7R10U2P6L7 HU9J9W1R7P2 ZI10S5H4Z1R2文档编码:CC7R10U2P6L7 HU9J9W1R7P2 ZI10S5H4Z1R2文档编码:CC7R10U2P6L7 HU9J9W1R7P2 ZI10S5H4Z1R2文档编码:CC7R10U2P6L7 HU9J9W1R7P2 ZI10S5H4Z1R2文档编码:CC7R10U2P6L7 HU9J9W1R7P2 ZI10S5H4Z1R2文档编码:CC7R10U2P6L7 HU9J9W1R7P2 ZI10S5H4Z1R2文档编码:CC7R10U2P6L7 HU9J9W1R7P2 ZI10S5H4
10、Z1R2文档编码:CC7R10U2P6L7 HU9J9W1R7P2 ZI10S5H4Z1R2文档编码:CC7R10U2P6L7 HU9J9W1R7P2 ZI10S5H4Z1R2文档编码:CC7R10U2P6L7 HU9J9W1R7P2 ZI10S5H4Z1R2文档编码:CC7R10U2P6L7 HU9J9W1R7P2 ZI10S5H4Z1R2文档编码:CC7R10U2P6L7 HU9J9W1R7P2 ZI10S5H4Z1R2文档编码:CC7R10U2P6L7 HU9J9W1R7P2 ZI10S5H4Z1R2文档编码:CC7R10U2P6L7 HU9J9W1R7P2 ZI10S5H4Z1R2文档
11、编码:CC7R10U2P6L7 HU9J9W1R7P2 ZI10S5H4Z1R2文档编码:CC7R10U2P6L7 HU9J9W1R7P2 ZI10S5H4Z1R2甲比乙少几分之几,已知乙,求甲。甲=乙(1-几分之几)6、某校有男生 240 人,女生比男生少61,女生有多少人?第五类、比单位“1”多或者少,求单位“1”.甲比乙多几分之几,已知甲,求乙。乙=甲(1+几分之几)商店运来一批水果,其中梨有20kg,梨比苹果多91,苹果多少千克?林场有 180 棵槐树,槐树的棵数比杨树多81,林场有多少棵杨树?甲比乙少几分之几,已知甲,求乙。乙=甲(1几分之几)某校有女生 200 人,女生比男生少61
12、,男生有多少 人?某养鸡场有公鸡 1200 只,比母鸡少51,母鸡有多少只?第六类、分数的和倍、差倍问题已知两个数的和(或差)及这两个数的倍数关系,求这两个数。方法一、和倍问题:单位1=和(1+倍数)另一个数=和单位 1 差倍问题:单位 1=和(1倍数)另一个数=差+单位 1 方法二、列方程,设单位1 为 x方法三、转化为比,再计算1、某单位四、五月份一共用电1680 千瓦时,已知四月份的用电量是五月份的3/5。五月份用电多少千瓦时?精品资料-欢迎下载-欢迎下载 名师归纳-第 3 页,共 5 页 -文档编码:CC7R10U2P6L7 HU9J9W1R7P2 ZI10S5H4Z1R2文档编码:C
13、C7R10U2P6L7 HU9J9W1R7P2 ZI10S5H4Z1R2文档编码:CC7R10U2P6L7 HU9J9W1R7P2 ZI10S5H4Z1R2文档编码:CC7R10U2P6L7 HU9J9W1R7P2 ZI10S5H4Z1R2文档编码:CC7R10U2P6L7 HU9J9W1R7P2 ZI10S5H4Z1R2文档编码:CC7R10U2P6L7 HU9J9W1R7P2 ZI10S5H4Z1R2文档编码:CC7R10U2P6L7 HU9J9W1R7P2 ZI10S5H4Z1R2文档编码:CC7R10U2P6L7 HU9J9W1R7P2 ZI10S5H4Z1R2文档编码:CC7R10U
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15、HU9J9W1R7P2 ZI10S5H4Z1R2文档编码:CC7R10U2P6L7 HU9J9W1R7P2 ZI10S5H4Z1R2文档编码:CC7R10U2P6L7 HU9J9W1R7P2 ZI10S5H4Z1R2文档编码:CC7R10U2P6L7 HU9J9W1R7P2 ZI10S5H4Z1R2文档编码:CC7R10U2P6L7 HU9J9W1R7P2 ZI10S5H4Z1R2文档编码:CC7R10U2P6L7 HU9J9W1R7P2 ZI10S5H4Z1R2文档编码:CC7R10U2P6L7 HU9J9W1R7P2 ZI10S5H4Z1R2文档编码:CC7R10U2P6L7 HU9J9W
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17、ZI10S5H4Z1R2文档编码:CC7R10U2P6L7 HU9J9W1R7P2 ZI10S5H4Z1R2文档编码:CC7R10U2P6L7 HU9J9W1R7P2 ZI10S5H4Z1R2文档编码:CC7R10U2P6L7 HU9J9W1R7P2 ZI10S5H4Z1R2文档编码:CC7R10U2P6L7 HU9J9W1R7P2 ZI10S5H4Z1R2文档编码:CC7R10U2P6L7 HU9J9W1R7P2 ZI10S5H4Z1R2文档编码:CC7R10U2P6L7 HU9J9W1R7P2 ZI10S5H4Z1R2文档编码:CC7R10U2P6L7 HU9J9W1R7P2 ZI10S5
18、H4Z1R2文档编码:CC7R10U2P6L7 HU9J9W1R7P2 ZI10S5H4Z1R2文档编码:CC7R10U2P6L7 HU9J9W1R7P2 ZI10S5H4Z1R2文档编码:CC7R10U2P6L7 HU9J9W1R7P2 ZI10S5H4Z1R2文档编码:CC7R10U2P6L7 HU9J9W1R7P2 ZI10S5H4Z1R2文档编码:CC7R10U2P6L7 HU9J9W1R7P2 ZI10S5H4Z1R2文档编码:CC7R10U2P6L7 HU9J9W1R7P2 ZI10S5H4Z1R2文档编码:CC7R10U2P6L7 HU9J9W1R7P2 ZI10S5H4Z1R2
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