# CCSS.2.NBT.B.6

addition, multi addend, two digit numbers; calculate, explain.

System: US Common Core Math
Route: /math/standards/us-ccss/curratom-us-ccss-2-nbt-b-6
Skills: 2

## Skills and Examples

- [Place Value Tens Ones](/math/skills/nbt/place-value-tens-ones) — Base-Ten Place Value and Whole-Number Notation
- [Operations Properties Apply](/math/skills/oa/operations-properties-apply) — Equations, Variables, Expressions, and Inequalities