# Addition and subtraction strategies (age 10+)

Add and subtract decimals to hundredths using strategies based on place value, properties of operations, and the relationship between addition and subtraction; relate strategies to written methods and explain reasoning

Builds on: Reading and writing numbers (age 10+) (hard, https://ai.page/c/reading-and-writing-numbers-age-10/en.md), Place Value × 10 and ÷ 10 (soft, https://ai.page/c/place-value-10-and-10/en.md), Fluent addition and subtraction (age 9+) (hard, https://ai.page/c/fluent-addition-and-subtraction-age-9/en.md)

Concept id: addition-and-subtraction-strategies-age-10. Subject: maths. Licence: CC BY-SA 4.0.

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