Keystones — Lintel

Five GCSE retrieval questions · 19 September 2023 · mathsvault.uk/keystones

1. Number

Find the total of 247, 224, and 81

Answer: 552
2. Algebra

Solve: ^x⁄₅ = 3

Answer: x = 15
3. Geometry

Calculate the hypotenuse when a = 8cm and b = 12cm

Answer: 14.42cm
4. Ratio

Find 66% of 224

Answer: 147.84
5. Statistics

Find the range of: -12, 1, 30, 2, 19

Answer: 42

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