Keystones — Cornerstone
Five GCSE retrieval questions · 3 October 2026 · mathsvault.uk/keystones
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1. Number Index law — multiplication
Simplify: 72 × 72
Answer: 74 -
2. Algebra Unknowns on both sides
Solve: 8x - 10 = 2x + 32
Answer: x = 7 -
3. Geometry Converting mixed metric units
Convert 2958ml to litres
Answer: 2.958 litres -
4. Ratio Mixed ratio problems
Express the first part of 6:3 as a fraction in simplest form
Answer: 2⁄3 -
5. Statistics Expected frequency
A die is rolled 36 times. How many times would you expect to get a 6?
Answer: 6