Keystones — Cornerstone
Five GCSE retrieval questions · 22 March 2025 · mathsvault.uk/keystones
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1. Number
What is the missing number: 42 + ? = 134
Answer: 92 -
2. Algebra
Factorise: 8x + 12
Answer: 4(2x + 3) -
3. Geometry
Opposite = 5cm, hypotenuse = 5.8cm. Find the angle
Answer: 60° (approximately) -
4. Ratio
Simplify: 8:6:4
Answer: 4:3:2 -
5. Statistics
Find the range of: 41, 31, 33, 31, 17
Answer: 24