Keystones — Bedrock

Five GCSE retrieval questions · 13 December 2022 · mathsvault.uk/keystones

1. Number

Calculate: ⁶⁄₁₀ + ²⁄₁₀

Answer: ⁴⁄₅
2. Algebra

Find the next term: 9, 15, 21, 27, ...

Answer: 33
3. Geometry

Opposite = 14cm, hypotenuse = 19.8cm. Find the angle

Answer: 45° (approximately)
4. Ratio

Simplify the ratio 12:16

Answer: 3:4
5. Statistics

Find the mean of: 17, 4, 14, 8, 12

Answer: 11

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