# CCSS.2.OA.C.3

odd, even, pairing; classify, represent, explain.

System: US Common Core Math
Route: /math/standards/us-ccss/curratom-us-ccss-2-oa-c-3
Skills: 2

## Skills and Examples

- [Even Odd Basic](/math/skills/count/even-odd-basic) — Counting and Cardinality Foundations
- [Parity Even Odd Reasoning](/math/skills/logic/parity-even-odd-reasoning) — Logic, Constraint, Deduction, and Combinatorics