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Mathematics (2019) Grade(s): KG


Decompose numbers less than or equal to 10 into pairs of smaller numbers in more than one way, by using concrete objects or drawings, and record each decomposition by a drawing or equation.

COS Examples

Example: 5 = 2 + 3 and 5 = 4 + 1

Unpacked Content


Students know:
  • "equal to" and the concept of equality meaning "the same as."
  • Addition is putting together numbers and subtraction is taking apart numbers.


Students are able to:
  • Represent quantities physically, pictorially, and symbolically.


Students understand that:
  • quantities may be named in a variety of ways.


  • Decompose
  • Equation