Keystones — Lintel

Five GCSE retrieval questions · 23 April 2024 · mathsvault.uk/keystones

1. Number

Calculate: 999 + 610

Answer: 1609
2. Algebra

Solve: ^x⁄₃ = 12.666666666667

Answer: x = 38
3. Geometry

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

Answer: 50.5°
4. Ratio

Simplify: 4:6:6

Answer: 2:3:3
5. Statistics

A bag has 3 red and 3 blue balls. What is the probability of picking a red ball?

Answer: ¹⁄₂

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