Keystones — Cornerstone

Five GCSE retrieval questions · 22 August 2022 · mathsvault.uk/keystones

1. Number

Simplify: x⁴ × x⁴

Answer: x⁸
2. Algebra

Expand: 2(x + 7)

Answer: 2x + 14
3. Geometry

Calculate the hypotenuse when a = 8cm and b = 14cm

Answer: 16.12cm
4. Ratio

Simplify the ratio 15:35

Answer: 3:7
5. Statistics

Calculate the mean of: 30, 18, 18, 30, 40, 26, 31

Answer: 27.6

Same five questions for everyone on Cornerstone on this date. Sets are stored as JSON for reliable print-on-demand — sign in for school-branded PDFs.