{"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 Number add sub three digits","label":"addition, subtraction, three digit numbers; calculate, explain.","public_slug":"curratom-england-nc-y3-number-addition-and-subtraction-add-subtract-mentally-formal-written-methods-up","route":"/math/standards/uk-england-nc/curratom-england-nc-y3-number-addition-and-subtraction-add-subtract-mentally-formal-written-methods-up","data_json_route":"/math/data/standards/uk-england-nc/curratom-england-nc-y3-number-addition-and-subtraction-add-subtract-mentally-formal-written-methods-up.json","data_markdown_route":"/math/data/standards/uk-england-nc/curratom-england-nc-y3-number-addition-and-subtraction-add-subtract-mentally-formal-written-methods-up.md","skill_count":2,"skills":[{"title":"Add Sub Within 1000 Algorithm","route":"/math/skills/nbt/add-sub-within-1000-algorithm","family_name":"Whole-Number Operations and Fact Fluency","standards":[]},{"title":"Multi Digit Add Sub Fluent","route":"/math/skills/nbt/multi-digit-add-sub-fluent","family_name":"Whole-Number Operations and Fact Fluency","standards":[]}],"crawler_summary":"England Y3 Number add sub three digits maps to 2 math skills."}}