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百分數：折扣、盈利與虧損
Author:
Anthony OR 柯志明
GeoGebra
柯志明 香港 GeoGebra 學院
New Resources
找出對稱軸
近似值：有效數字
四邉形 (四年級) 教師版
長方體平面投影 (Codex版)
小数 的副本
Discover Resources
線、面平行
Similar triangles inscribed iteration
橢圓面積的計算
百分數：折扣 / 賺賠
congruent triangles_provided by Mr Yeung Kar Chun
Discover Topics
Algebra
Indefinite Integral
Expected Value
Normal Distribution
Binomial Distribution