Document# Excerpt 3: Cluster 1.OA.A: Represent and solve problems involving addition and subtraction. (Pages 14-23)

## Supporting grades: 1

UnboundEd## Grade 1 Standards Guide: Operations & Algebraic Thinking

Description: Explanations and examples of how to implement the Operations & Algebraic Thinking standards in Grade 1. Students can apply their understanding of the relationship between addition and subtraction to solve more complex word problems. Students could then use a Level 2 or 3 method to determine the unknown (for example, they could count on from 6). So far we have looked at the computation methods that students use to add single-digit numbers and the important understandings regarding the properties of addition and the relationship between addition and subtraction.

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