Keystones — Cornerstone

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

1. Number

Simplify: 6² × 6⁵

Answer: 6⁷
2. Algebra

Collect like terms: 2x + 4y + 3x + 8y

Answer: 5x + 12y
3. Geometry

Calculate the area of a right triangle with perpendicular sides 15cm and 11cm

Answer: 82.5cm²
4. Ratio

Calculate 25% of 20

Answer: 5
5. Statistics

Find the range of: 33, 20, 17, 33, 44

Answer: 27

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