Keystones — Cornerstone
Five GCSE retrieval questions · 31 July 2025 · mathsvault.uk/keystones
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1. Number
Calculate: 27 + 43
Answer: 27 + 43 = 70 -
2. Algebra
Expand: 7(x + 3)
Answer: 7x + 21 -
3. Geometry
Opposite = 7cm, hypotenuse = 9.9cm. Find the angle
Answer: 45° (approximately) -
4. Ratio
Simplify: 12:16:24
Answer: 3:4:6 -
5. Statistics
Calculate the range of: 60, 30, 69, 43, 22, 57
Answer: 47