# CCSS.2.NBT.B.5

addition, subtraction, within 100; calculate, fluently compute, explain.

System: US Common Core Math
Route: /math/standards/us-ccss/curratom-us-ccss-2-nbt-b-5
Skills: 3

## Skills and Examples

- [Add Two Digit No Regroup](/math/skills/nbt/add-two-digit-no-regroup) — Whole-Number Operations and Fact Fluency
- [Sub Two Digit No Regroup](/math/skills/nbt/sub-two-digit-no-regroup) — Whole-Number Operations and Fact Fluency
- [Operations Properties Apply](/math/skills/oa/operations-properties-apply) — Equations, Variables, Expressions, and Inequalities