Keystones — Bedrock

Five GCSE retrieval questions · 29 December 2024 · mathsvault.uk/keystones

1. Number

Simplify: 8² × 8³

Answer: 8⁵
2. Algebra

Simplify: 4x + 4x

Answer: 8x
3. Geometry

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

Answer: 60° (approximately)
4. Ratio

Simplify the ratio 6:10

Answer: 3:5
5. Statistics

Find the mean of: 11, 9, 19, 20

Answer: 14.75

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