Keystones — Bedrock

Five GCSE retrieval questions · 9 April 2023 · mathsvault.uk/keystones

1. Number

20000

Answer: 2 × 10⁴
2. Algebra

Simplify: 4x + 6x

Answer: 10x
3. Geometry

Opposite = 15cm, hypotenuse = 21.2cm. Find the angle

Answer: 45° (approximately)
4. Ratio

Simplify the ratio 8:10

Answer: 4:5
5. Statistics

Find the mean of: 4, 3, 16, 2

Answer: 6.25

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