Keystones — Cornerstone
Five GCSE retrieval questions · 28 May 2025 · mathsvault.uk/keystones
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1. Number
Calculate: 32 + 29
Answer: 32 + 29 = 61 -
2. Algebra
Solve: 6x = 36
Answer: x = 6 -
3. Geometry
Find the perimeter of a right triangle with sides 6cm, 8cm, 10cm
Answer: 24cm -
4. Ratio
Find 47% of 173
Answer: 81.31 -
5. Statistics
Calculate the mean of: 30, 45, 7, 49, 45, 49, 15, 6
Answer: 30.8