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1.OA.B.4 Common Core Games

CCSS.Math.Content.1.OA.B.4:
Understand subtraction as an unknown-addend problem. For example, subtract 10 - 8 by finding the number that makes 10 when added to 8.
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Addition Equation Play An easy and engaging math game for Grade 1 kids to.. 23,812 Plays Grade 1 (614) Addition Equation
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Mission Addition Play Practice your addition skills with this cool math .. 54,509 Plays Grade 1 (1020) Mission Addition
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