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本帖最後由 kenwong888 於 15-5-2 23:17 編輯
HaYi 發表於 15-5-2 16:36
數學個題, 佢應不是考commutative 的能力, 換位是可以出相同答案, 但此考 "位值相加", 如不順序排好似不合 ...
Yes, 考 "位值相加", but don't you think most students can check the most significant digit value at first glance without thinking, or they usually need counting and saying 個,十,百,千,萬 and so forth before they can identify the answer!
For writing the 個位 first, they just write down the answer as they count and think right??? It is intuitively to write 個位 first, 十位 second, and so on right???
Substance is much more important than form!
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