Keystones — Lintel
Five GCSE retrieval questions · 9 February 2025 · mathsvault.uk/keystones
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1. Number
What is the missing number: 39 + ? = 200
Answer: 161 -
2. Algebra
Collect like terms: 7x + 3y + 6x + 8y
Answer: 13x + 11y -
3. Geometry
Adjacent = 19cm, hypotenuse = 27cm. Find the angle
Answer: 45.3° -
4. Ratio
Find 75% of 109
Answer: 81.75 -
5. Statistics
Calculate the mean of: 8, 30, 28, 16, 9, 15, 41
Answer: 21