Keystones — Lintel
Five GCSE retrieval questions · 16 January 2025 · mathsvault.uk/keystones
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1. Number
Find the missing number: 8.25 + □ = 13.87
Answer: □ = 5.62 -
2. Algebra
Simplify: 8x - 5x + 7y - 5y
Answer: 3x + 2y -
3. Geometry
Opposite = 19cm, adjacent = 14cm. Calculate the angle
Answer: 53.6° -
4. Ratio
Find 40% of 161
Answer: 64.4 -
5. Statistics
A bag has 3 red and 5 blue balls. What is the probability of picking a red ball?
Answer: 3⁄8