Kindergarten » Operations & Algebraic Thinking » Understand addition as putting together and adding to, and understand subtraction as taking apart and taking from. » 3

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Decompose numbers less than or equal to 10 into pairs in more than one way, e.g., by using objects or drawings, and record each decomposition by a drawing or equation (e.g., 5 = 2 + 3 and 5 = 4 + 1).