人教版三年级下册《数学与思维》奥数教材

武昌区三道街小学

三年级下册 数学与思维

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目 录

第一讲 辨认方向 ······································································ 1 第二讲 将错就错计算商 ····························································· 3 第三讲 用除法解决周期问题 ······················································· 4 第四讲 巧填除法竖式 ································································ 5 第五讲 倒推计算被除数 ····························································· 6 第六讲 平均数问题 ··································································· 7 第七讲 巧填乘法竖式 ································································ 8 第八讲 简单的间隔问题 ····························································· 9 第九讲 乘除法解决问题（１） ·················································· 10 第十讲 乘除法解决问题（2） ···················································· 11 第十一讲 乘除法解决问题（3） ················································· 12 第十二讲 巧算面积（１） ························································ 13 第十三讲 巧算面积（2） ·························································· 14 第十四讲 巧算面积（3） ·························································· 15 第十五讲 巧算面积（4） ·························································· 16 第十六讲 年月日问题 ······························································ 17 第十七讲 搭配的学问（1） ······················································· 18 第十八讲 搭配的学问（2） ······················································· 19 第十九讲 年龄问题（1） ·························································· 20 第二十讲 年龄问题（2） ·························································· 21

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第一讲 辨认方向

例题：看图填空。

（1）图书馆在学校的 面，超市在学校的 面。 （2）邮局在学校的______面；小明家在学校的______面。 （3）学校在图书馆的______面，在超市的______面。

练习1．看图填空。

（1） 图书馆在学校的 面，超市在学校的 面。 （2）动物园在学校的 面，邮局在学校的 面。 （3）图书馆在动物园的 方向，超市在动物园的 面。 （4）图书馆在邮局的 面，邮局在超市的 方向。

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练习２．根据路线图回答问题。 .

（１）从火车站出发，先向 行驶 站到解放路，再向 行驶 站到银行，再向 行驶 站到广场，最后向 行驶 站到少年宫。

（２）小刚坐了４站，在人民街下车，他可能是在哪站上车的？

练习３．看路线图，填一填。

（1）超市在图书馆的 面；小明家在图书馆的 面；图书馆在商场的 面；图书馆在小明家的 面。

（2）从学校到博物馆的最近路线是：先向 走 米到图书馆，再向 走 米到博物馆。

（３）从小明家到超市的最近路线是：先向 走 米到图书馆，再向 走 米到超市。

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