# Using Simple Formulae

Use simple formulae expressed in words or symbols to calculate values (e.g. perimeter = 2 × (length + width))

Builds on: Writing Number Sentences (soft, https://ai.page/c/writing-number-sentences/en.md), Order of operations (hard, https://ai.page/c/order-of-operations/en.md)

Concept id: using-simple-formulae. Subject: maths. Licence: CC BY-SA 4.0.

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