# CCSS.4.OA.A.1

interpret, represent, explain; multiplicative comparison, multiplication.

System: US Common Core Math
Route: /math/standards/us-ccss/curratom-us-ccss-4-oa-a-1
Skills: 2

## Skills and Examples

- [Bar Model Multiplicative Comparison](/math/skills/oa/bar-model-multiplicative-comparison) — Operations Models, Bar Models, and Word Problems
- [Multiply Divide Word Problems One Step](/math/skills/oa/multiply-divide-word-problems-one-step) — Operations Models, Bar Models, and Word Problems