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根據百分率找數量（二）: 例2的副本
Author:
冯圣军
,
GeoGebra Institute of Hong Kong
GeoGebra
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近似值：有效數字
算柱 (兩位數)
小数 的副本
AI 訓練教室
球體建築師
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國道計程收費
sin(x)0-720
angle sum of polygon
tool2
Test
Discover Topics
Arithmetic
Angles
Conditional Probability
Upper and Lower Sum or Riemann Sum
Normal Distribution