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根據百分率找數量（二）: 例4的副本
Author:
冯圣军
,
GeoGebra Institute of Hong Kong
GeoGebra
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近似值：有效數字
異分母分數減法
小数 的副本
兩位數除以一位數（一）
算柱 (兩位數)
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正三角形的旋轉2
q5-8
DSE Circle-ACT03C Relationship Between Arcs and Angles at Circumference
Ext angle cyclic quad
與兩圓相切之圓心雙曲線軌跡
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Diagrams
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Frequency Distribution
Conic Sections
Sphere