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加法(10個一數)
Author:
arist
GeoGebra
New Resources
兩位數除以一位數（二）
兩組對邊相等的四邊形
兩組對邊相等和有直角的四邊形
找出對稱軸
判斷球體
Discover Resources
CAS View
consistent equation 3x3
劉虹圻 旁心
滑桿動畫1
加法002结果(20以内)
Discover Topics
Normal Distribution
Cuboid
Arithmetic
Multiplication
Similarity Transformation or Similarity