Keystones — Bedrock

Five GCSE retrieval questions · 21 February 2025 · mathsvault.uk/keystones

1. Number

40000

Answer: 4 × 10⁴
2. Algebra

Solve: x + 7 = 21

Answer: x = 14
3. Geometry

Opposite = 5cm, hypotenuse = 5.8cm. Find the angle

Answer: 60° (approximately)
4. Ratio

Simplify the ratio 25:35

Answer: 5:7
5. Statistics

Find the mean of: 8, 3, 19, 12, 6

Answer: 9.6

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