Keystones — Bedrock

Five GCSE retrieval questions · 30 April 2022 · mathsvault.uk/keystones

1. Number

9000

Answer: 9 × 10³
2. Algebra

Solve: x + 13 = 32

Answer: x = 19
3. Geometry

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

Answer: 45° (approximately)
4. Ratio

Simplify the ratio 8:20

Answer: 2:5
5. Statistics

Find the mean of: 14, 6, 15

Answer: 11.666666666667

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