Standard

CCSS.Math.Content.K.OA
Operations and Algebraic Thinking
CCSS.Math.Content.K.OA.A
Understand addition as putting together and adding to, and understand subtraction as taking apart and taking from.
CCSS.Math.Content.K.OA.A.1
Represent addition and subtraction with objects, fingers, mental images, drawings1, sounds (e.g., claps), acting out situations, verbal explanations, expressions, or equations.
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