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三年级应用题汇总,最完整版

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本帖最后由 小亚老师 于 2018-5-4 18:12 编辑


3.jpg 1、简单应用题

(1)简单应用题:只含有一种基本数量关系,或用一步运算解答的应用题,通常叫做简单

应用题。


(2)解题步骤: A   审题理解题意:了解应用题的内容,知道应用题的条件和问题。读题时,不丢字不添字
边读边思考,弄明白题中每句话的意思。也可以复述条件和问题,帮助理解题意。
B   选择算法和列式计算:这是解答应用题的中心工作。从题目中告诉什么,要求什么着手,
逐步根据所给的条件和问题,联系四则运算的含义,分析数量关系,确定算法,进行解答并
标明正确的单位名称。
C   检验:就是根据应用题的条件和问题进行检查看所列算式和计算过程是否正确,是否符
合题意。如果发现错误,马上改正。

4.gif 2、复合应用题

(1)有两个或两个以上的基本数量关系组成的,用两步或两步以上运算解答的应用题,通
常叫做复合应用题。

(2)含有三个已知条件的两步计算的应用题。

A   求比两个数的和多(少)几个数的应用题。
B   比较两数差与倍数关系的应用题。
aHR0cDovL3d3dy5jenFzeXlleS5jb20vRmlsZXMvYWRtaW5GaWxlcy8yMDEwMjEvMjAxMi8xMS0yMC8y.png

(3)含有两个已知条件的两步计算的应用题。
A   已知两数相差多少(或倍数关系)与其中一个数,求两个数的和(或差)。
B   已知两数之和与其中一个数,求两个数相差多少(或倍数关系)。
(4)解答连乘连除应用题。

(5)解答三步计算的应用题。


(6)解答小数计算的应用题:小数计算的加法、减法、乘法和除法的应用题,他们的数量关系、结构、和解题方式都与正式应用题基本相同,只是在已知数或未知数中间含有小数。

(7)常见的数量关系:

总价=单价×数量
路程=速度×时间
工作总量=工作时间×工效                                                                                             
总产量=单产量×数量

6.gif 3、典型应用题(以下12个问题的具体解题方法请下载附件
QQ截图20140924150949.png

(1)平均数问题:平均数是等分除法的发展。
(2)归一问题:已知相互关联的两个量,其中一种量改变,另一种量也随之而改变,其变
化的规律是相同的,这种问题称之为归一问题。
(3)归总问题:是已知单位数量和计量单位数量的个数,以及不同的单位数量(或单位数
量的个数),通过求总数量求得单位数量的个数(或单位数量)。
(4)和差问题:已知大小两个数的和,以及他们的差,求这两个数各是多少的应用题叫做
和差问题。
(5)和倍问题:已知两个数的和及它们之间的倍数关系,求两个数各是多少的应用题,叫
做和倍问题。
(6)差倍问题:已知两个数的差,及两个数的倍数关系,求两个数各是多少的应用题。
(7)行程问题:关于走路、行车等问题,一般都是计算路程、时间、速度,叫做行程问题。
(8)还原问题:已知某未知数,经过一定的四则运算后所得的结果,求这个未知数的应用
题,我们叫做还原问题。
(9)植树问题:这类应用题是以“植树”为内容。凡是研究总路程、株距、段数、棵树四
种数量关系的应用题,叫做植树问题。
(10)盈亏问题:是在等分除法的基础上发展起来的。他的特点是把一定数量的物品,平均
分配给一定数量的人,在两次分配中,一次有余,一次不足(或两次都有余),或两次都不
足),已知所余和不足的数量,求物品适量和参加分配人数的问题,叫做盈亏问题。
(11)年龄问题:将差为一定值的两个数作为题中的一个条件,这种应用题被称为“年龄问
题”。
(12)鸡兔问题:已知“鸡兔”的总头数和总腿数。求“鸡”和“兔”各多少只的一类应用
题。通常称为“鸡兔问题”又称鸡兔同笼问题。

微信截图_20180331175533.png 下载处 三年应用题 .pdf (290.18 KB, 下载次数: 697)

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