Common Core Alignment:.

K.OA.3:

Operations And Algebraic Thinking

Understand Addition As Putting Together And Adding To, And Under- Stand Subtraction As Taking Apart And Taking From.

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).