# England Y1 Number add sub to 20

addition, subtraction, within 20; calculate, represent.

System: England National Curriculum: Mathematics
Route: /math/standards/uk-england-nc/curratom-england-nc-y1-number-addition-and-subtraction-add-subtract-one-digit-two-digit-to
Skills: 3

## Skills and Examples

- [Place Value Tens Ones](/math/skills/nbt/place-value-tens-ones) — Base-Ten Place Value and Whole-Number Notation
- [Add Within 20 Strategies](/math/skills/oa/add-within-20-strategies) — Whole-Number Operations and Fact Fluency
- [Sub Within 20 Strategies](/math/skills/oa/sub-within-20-strategies) — Whole-Number Operations and Fact Fluency