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Home / Teaching Resources / Kindergarten / Standards for Mathematical Practice / Operations & Algebraic Thinking / Understand addition, and understand subtraction / 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.
(View this topic on www.corestandards.org )