Keystones — Lintel

Five GCSE retrieval questions · 15 March 2022 · mathsvault.uk/keystones

1. Number

What is the missing number: 81 + ? = 127

Answer: 46
2. Algebra

Solve: ^x⁄₃ = 8.3333333333333

Answer: x = 25
3. Geometry

Opposite = 18cm, adjacent = 19cm. Calculate the angle

Answer: 43.5°
4. Ratio

Find 29% of 349

Answer: 101.21
5. Statistics

Calculate the mean of: 48, 26, 22, 27, 24, 25, 27

Answer: 28.4

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