Keystones — Lintel

Five GCSE retrieval questions · 27 February 2024 · mathsvault.uk/keystones

1. Number

Calculate: 999 + 858

Answer: 1857
2. Algebra

Solve: ^x⁄₇ = 4.7142857142857

Answer: x = 33
3. Geometry

Opposite = 17cm, adjacent = 14cm. Calculate the angle

Answer: 50.5°
4. Ratio

Simplify: 8:10:4

Answer: 4:5:2
5. Statistics

Calculate the mean of: 30, 24, 41, 10, 19, 17, 33

Answer: 24.9

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