Keystones — Lintel
Five GCSE retrieval questions · 17 September 2025 · mathsvault.uk/keystones
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1. Number
Calculate: 506 + 303
Answer: 506 + 303 = 809 -
2. Algebra
Solve: x⁄7 = 1.2857142857143
Answer: x = 9 -
3. Geometry
Adjacent = 17cm, hypotenuse = 26cm. Find the angle
Answer: 49.2° -
4. Ratio
Find 44% of 397
Answer: 174.68 -
5. Statistics
A bag has 4 red and 6 blue balls. What is the probability of picking a red ball?
Answer: 2⁄5