Keystones — Bedrock

Five GCSE retrieval questions · 31 December 2024 · mathsvault.uk/keystones

1. Number

Calculate: ¹⁰⁄₁₂ + ¹⁄₁₂

Answer: ¹¹⁄₁₂
2. Algebra

Simplify: 9x + 5x

Answer: 14x
3. Geometry

Opposite = 10cm, hypotenuse = 20cm. Find the angle

Answer: 30° (approximately)
4. Ratio

Simplify the ratio 40:20

Answer: 2:1
5. Statistics

Find the mean of: 6, 16, 10

Answer: 10.666666666667

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