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計算減法
Author:
tommy.chan
Topic:
Subtraction
GeoGebra
New Resources
兩組對邊相等的四邊形
三位數除以一位數（一）
兩位數加法
兩位數除以一位數（二）
三位數除以一位數（二）
Discover Resources
parallelogram
簡易的迷宮
test
切割任意四邊形再拼砌成矩形
方形地毯
Discover Topics
Division
Rotation
Scatter Plot
Mathematics
Inequalities