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.
- "equal to" and the concept of equality meaning "the same as."
- Addition is putting together numbers and subtraction is taking apart numbers.
- Represent quantities physically, pictorially, and symbolically.
- quantities may be named in a variety of ways.