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COMMON CORE
FIRST GRADE MATH
CCSS.MATH.CONTENT.1.OA.B.4
GAMES
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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Operations and Algebraic Thinking (OA)
Number and Operations in Base Ten (NBT)
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An easy and engaging math game for Grade 1 kids to..
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Addition Equation
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Mission Addition
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