Online exercise
Addition Facts Within 20
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Limit addition to within 20 for students new to two digit addition in this engaging exercise.
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Addition 4
4 games
7 online exercises
5 printable worksheets
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To help Roly move through obstacles, kids learn a regrouping strategy to make addition within 20 easily!
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Bubble Buster: Addition to 20
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Kids must move fast to find addition pairs that total a target sum within 20.
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