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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
柱體建築師
兩位數除以一位數（一）
兩組對邊相等的四邊形
画直线等分三角形的面积
四邊形的特性
Discover Resources
切割任意四邊形再拼砌成矩形
circle
mooc第四讲作业单晨
小球弹射
我的第一个绘本
Discover Topics
Conditional Probability
Mathematics
Polygons
Difference and Slope
Dilation