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qiang dao yu gou
Author(s): 
Pages: 37
Year: Issue:  6
Journal: A Friend of Pupils

Abstract: <正> 强盗本来不如狗,但却与狗并排走.数头共有二百五,数脚恰好六百九.小朋友们想一想.多少强盗多少狗?这是一道有趣的儿歌型数学题.有三种巧妙解法:解法1:
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