一共8件玩具,小明多芬芬2件玩貝具,
小明一共有多小玩具?
我知昰5.
5+3=8
5-2=3
but why ? why not 6+2=8, 6-2=4
why use 5?? can someone help me plz
my math is very bad ..
收錄日期: 2021-04-20 14:52:42
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20140213000051KK00025