・この動画「

三（四）年级和倍/差倍/和差问题综合讲解，三招解决和差倍问题

」@bilibili.comと
　　↓↓↓一緒に視聴されています(Often Viewed With)：↓↓↓
・三年级数学-专题四 和倍问题
・小学奥数三年级 和倍问题
・小学奥数三年级 差倍问题
・L3-28-差倍问题
・用差倍解决的年龄问题

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