Keystones — Cornerstone
Five GCSE retrieval questions · 27 January 2026 · mathsvault.uk/keystones
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1. Number
Calculate: 55 + 99
Answer: 55 + 99 = 154 -
2. Algebra
Expand: 5(x + 7)
Answer: 5x + 35 -
3. Geometry
Opposite = 11cm, hypotenuse = 22cm. Find the angle
Answer: 30° (approximately) -
4. Ratio
Find 26% of 436
Answer: 113.36 -
5. Statistics
Calculate the mean of: 10, 35, 9, 13, 32, 46, 45, 34
Answer: 28