Keystones — Lintel
Five GCSE retrieval questions · 8 May 2025 · mathsvault.uk/keystones
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1. Number
Calculate: 257 + 136
Answer: 257 + 136 = 393 -
2. Algebra
What is the next term? 2, 8, 32, 128, ...
Answer: 512 -
3. Geometry
Opposite = 15cm, adjacent = 13cm. Calculate the angle
Answer: 49.1° -
4. Ratio
Find 42% of 438
Answer: 183.96 -
5. Statistics
A bag has 5 red and 4 blue balls. What is the probability of picking a red ball?
Answer: 5⁄9