# CCSS.3.MD.D.8

perimeter, polygons, measurement problems; solve, calculate, compare.

System: US Common Core Math
Route: /math/standards/us-ccss/curratom-us-ccss-3-md-d-8
Skills: 3

## Skills and Examples

- [Polygons Classify](/math/skills/geom/polygons-classify) — Geometry Shape Attributes and Classification
- [Length Compare Direct](/math/skills/measure/length-compare-direct) — Measurement Units, Tools, Time, and Money
- [Perimeter Count Units](/math/skills/measure/perimeter-count-units) — Geometric Measurement