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根據百分率找數量（二）: 例1
Author:
GeoGebra Institute of Hong Kong
Topic:
Percentages
GeoGebra
New Resources
画直线等分三角形的面积
四邉形 (四年級) 教師版
兩組對邊相等的四邊形
球體建築師
算柱 (兩位數)
Discover Resources
ggbbook1
P53_3c
Ex.2
六芒星
Fill the circle的副本
Discover Topics
Addition
Fractal Geometry
Geometric Mean
Perimeter
Hypergeometric Distribution