回复：用新加坡数学拆招

来源: cala11 于 2007-09-19 12:32:13 [] [旧帖] [给我悄悄话] 阅读数 : (133 bytes)
本帖于 2007-09-19 12:59:05 时间, 由普通用户 edumom 编辑
回答: 女儿7岁多作业到半夜12：30。还没弄完 由 cala11 于 2007-09-19 11:36:31

This is good.
But, in her school, they teach them use addtion to guess...choose a number and start to guess until you find it....

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