Keystones — Lintel

Five GCSE retrieval questions · 13 February 2023 · mathsvault.uk/keystones

1. Number

Simplify: x⁵ × x²

Answer: x⁷
2. Algebra

Solve: ^x⁄₇ = 5

Answer: x = 35
3. Geometry

Adjacent = 21cm, hypotenuse = 33cm. Find the angle

Answer: 50.5°
4. Ratio

Find 41% of 467

Answer: 191.47
5. Statistics

A bag has 7 red and 4 blue balls. What is the probability of picking a red ball?

Answer: ⁷⁄₁₁

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