Keystones — Lintel

Five GCSE retrieval questions · 18 April 2026 · mathsvault.uk/keystones

1. Number

Add: ³⁄₈ + ⁵⁄₇

Answer: ⁶¹⁄₅₆
2. Algebra

Solve: 7x = 21

Answer: x = 3
3. Geometry

Adjacent = 16cm, hypotenuse = 36cm. Find the angle

Answer: 63.6°
4. Ratio

Simplify the ratio 7m:700cm

Answer: 1:100
5. Statistics

Find the range of: -16, -10, 29, -13, 25

Answer: 45

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