Operations & Algebraic Thinking
This standard expects first graders to:
- represent and solve problems involving addition and subtraction.
- understand the relationship between addition and subtraction.
- add and subtract within 20.
- understand the meaning of the equal sign.
- represent and solve problems involving addition and subtraction.
- understand the relationship between addition and subtraction.
- add and subtract within 20.
- understand the meaning of the equal sign.