{"system":{"system_id":"us_ccss","public_slug":"us-ccss","label":"US Common Core Math","official_source_urls":["https://thecorestandards.org/Math/","https://thecorestandards.org/standards-in-your-state/"]},"standard":{"system_id":"us_ccss","system_slug":"us-ccss","system_label":"US Common Core Math","code":"CCSS.2.NBT.B.7","label":"addition, subtraction, within 1000, place value; calculate, model, explain.","public_slug":"curratom-us-ccss-2-nbt-b-7","route":"/math/standards/us-ccss/curratom-us-ccss-2-nbt-b-7","data_json_route":"/math/data/standards/us-ccss/curratom-us-ccss-2-nbt-b-7.json","data_markdown_route":"/math/data/standards/us-ccss/curratom-us-ccss-2-nbt-b-7.md","skill_count":3,"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":"Add Sub Within 1000 Models","route":"/math/skills/nbt/add-sub-within-1000-models","family_name":"Whole-Number Operations and Fact Fluency","standards":[]},{"title":"Operations Properties Apply","route":"/math/skills/oa/operations-properties-apply","family_name":"Equations, Variables, Expressions, and Inequalities","standards":[]}],"crawler_summary":"CCSS.2.NBT.B.7 maps to 3 math skills."}}