Keystones — Bedrock

Five GCSE retrieval questions · 18 October 2022 · mathsvault.uk/keystones

1. Number

8000

Answer: 8 × 10³
2. Algebra

Solve: x + 15 = 18

Answer: x = 3
3. Geometry

Opposite = 11cm, hypotenuse = 12.7cm. Find the angle

Answer: 60° (approximately)
4. Ratio

Simplify the ratio 4:16

Answer: 1:4
5. Statistics

Find the mean of: 6, 8, 15

Answer: 9.6666666666667

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