# CCSS.1.OA.B.3

operation properties, addition strategies, subtraction strategies; calculate, explain.

System: US Common Core Math
Route: /math/standards/us-ccss/curratom-us-ccss-1-oa-b-3
Skills: 1

## Skills and Examples

- [Operations Properties Apply](/math/skills/oa/operations-properties-apply) — Equations, Variables, Expressions, and Inequalities