有向數..... p.s 10點

🎓 學業台教學

2007-10-02 2:06 am

1 啲有向數 (+ ,, - ,, × ,, ÷ )嘅資料詳盡咁比我
有10點...
唔該...
一定要(+ ,, - ,, × ,, ÷ )牙,,,要多資料
thx....

回答 (2)

2007-10-02 2:19 am

✔ 最佳答案

http://www.qcobass.edu.hk/user/ccw/public_html/interact_down3.htm#direct

http://www.hkedcity.net/resources/common/res_detail.phtml?res_cntr_id=29533

http://www.mfbmclct.edu.hk/~maths/learning_kit/direct_number/direct_number.htm

http://www.mathland.idv.tw/fun/egg.html

http://itied.ied.edu.hk/cgi-bin/resource/details.php3?id=512

👍 0 👎 0

2007-10-02 3:03 am

-5+(-66) -5x(-6)負負得正,
=-5-66 =-5x-6 正正得正,
=-71 =30 負正/正負得負

參考: me

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