引用:
原帖由 kai_matt 於 1-2-2013 23:22 發表
coz this chapter wants childeren to know the difference between百位數值and 十位數值
so the question focus on the number 1 and 2 itself; not 100 and 20...
其實我都覺得佢問得衰, 但係有時你明白佢問問題背後既用意, 係比咬文嚼字重要
題目絕對唔係想考你2-1=?
係想測試你明唔明白百位數同十位數既含意, 係希望確保你知道120既1=100, 120既2=20