# Percentages (age 12+)

Solve problems involving percentage increase, percentage decrease, finding the original value after a percentage change, and calculating simple interest

Builds on: Decimals and fractions (age 10+) (hard, https://ai.page/c/decimals-and-fractions-age-10/en.md), Proportional Reasoning Vocabulary (soft, https://ai.page/c/proportional-reasoning-vocabulary/en.md), Calculating Percentages (hard, https://ai.page/c/calculating-percentages/en.md)

Concept id: percentages-age-12. Subject: maths. Licence: CC BY-SA 4.0.

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