{"system":{"system_id":"uk_england_nc","public_slug":"uk-england-nc","label":"England National Curriculum: Mathematics","official_source_urls":["https://www.gov.uk/government/publications/national-curriculum-in-england-mathematics-programmes-of-study/national-curriculum-in-england-mathematics-programmes-of-study","https://www.gov.uk/national-curriculum"]},"standard":{"system_id":"uk_england_nc","system_slug":"uk-england-nc","system_label":"England National Curriculum: Mathematics","code":"England Y3 Addition and subtraction","label":"ratio, addition, subtraction, operations; solve, estimate.","public_slug":"curratom-england-nc-y3-addition-and-subtraction-problems-solve-addition-subtraction-problems-estimate-answers-inverse","route":"/math/standards/uk-england-nc/curratom-england-nc-y3-addition-and-subtraction-problems-solve-addition-subtraction-problems-estimate-answers-inverse","data_json_route":"/math/data/standards/uk-england-nc/curratom-england-nc-y3-addition-and-subtraction-problems-solve-addition-subtraction-problems-estimate-answers-inverse.json","data_markdown_route":"/math/data/standards/uk-england-nc/curratom-england-nc-y3-addition-and-subtraction-problems-solve-addition-subtraction-problems-estimate-answers-inverse.md","skill_count":2,"skills":[{"title":"Add Sub Word Problems One Step","route":"/math/skills/oa/add-sub-word-problems-one-step","family_name":"Operations Models, Bar Models, and Word Problems","standards":[]},{"title":"Ratio notation and equivalent ratios","route":"/math/skills/ratio/notation-equivalent-ratios","family_name":"Ratio, Rate, Scaling, and Proportional Readiness","standards":[]}],"crawler_summary":"England Y3 Addition and subtraction maps to 2 math skills."}}