Keystones — Lintel

Five GCSE retrieval questions · 12 October 2023 · mathsvault.uk/keystones

1. Number

What is the missing number: 88 + ? = 133

Answer: 45
2. Algebra

Solve: ^x⁄₅ = 7.8

Answer: x = 39
3. Geometry

Opposite = 9cm, adjacent = 20cm. Calculate the angle

Answer: 24.2°
4. Ratio

Find 64% of 72

Answer: 46.08
5. Statistics

Find the range of: 17, 25, -26, -15, 9

Answer: 51

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