Keystones — Lintel

Five GCSE retrieval questions · 21 March 2025 · mathsvault.uk/keystones

1. Number

Calculate: 997 + 732

Answer: 1729
2. Algebra

Solve: ^x⁄₄ = 6.5

Answer: x = 26
3. Geometry

Adjacent = 26cm, hypotenuse = 33cm. Find the angle

Answer: 38°
4. Ratio

Find 53% of 142

Answer: 75.26
5. Statistics

A bag has 8 red and 6 blue balls. What is the probability of picking a red ball?

Answer: ⁴⁄₇

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