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GeoGebra 教室

Quick Lesson Demo

作者:Tim Brzezinski, Anthony OR 柯志明, Mabore, John Ulbright

主题:算术

John arrived home at quarter of 8. Express this time below.

Cindy gave the cashier $1.00 for a $0.22 pack of gum. Express her change by dragging coins below the line.

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