Keystones — Lintel
Five GCSE retrieval questions · 13 March 2024 · mathsvault.uk/keystones
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1. Number
What is the missing number: 45 + ? = 129
Answer: 84 -
2. Algebra
Factorise fully: 14x² + 4x
Answer: 2x(7x + 2) -
3. Geometry
Adjacent = 22cm, hypotenuse = 33cm. Find the angle
Answer: 48.2° -
4. Ratio
Simplify the ratio 3m:300cm
Answer: 1:100 -
5. Statistics
A bag has 7 red and 8 blue balls. What is the probability of picking a red ball?
Answer: 7⁄15