Keystones — Bedrock

Five GCSE retrieval questions · 19 April 2022 · mathsvault.uk/keystones

1. Number

80000

Answer: 8 × 10⁴
2. Algebra

Simplify: 3x + 7x

Answer: 10x
3. Geometry

Find the area of a right triangle with base 5cm and height 7cm

Answer: 17.5cm²
4. Ratio

Simplify the ratio 30:20

Answer: 3:2
5. Statistics

Find the mean of: 5, 18, 2, 10

Answer: 8.75

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