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小二、二位數的減法(直式、未退位)

U8u854007•Created February 1, 2017
小二、二位數的減法(直式、未退位)
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Instructions

1.請按下面的數字將其改為正確答案。 2.按下CHECK檢查答案是否正確。

Project Details

Project ID142975087
CreatedFebruary 1, 2017
Last ModifiedFebruary 1, 2017
SharedFebruary 1, 2017
Visibilityvisible
CommentsAllowed