Keystones — Lintel
Five GCSE retrieval questions · 29 July 2023 · mathsvault.uk/keystones
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1. Number
The sum of three consecutive numbers is 105. What are the numbers?
Answer: 34, 35, and 36 -
2. Algebra
For y = 2x³ + 13, find y when x = 3
Answer: y = 67 -
3. Geometry
Opposite = 19cm, adjacent = 12cm. Calculate the angle
Answer: 57.7° -
4. Ratio
Find 72% of 437
Answer: 314.64 -
5. Statistics
A bag has 8 red and 7 blue balls. What is the probability of picking a red ball?
Answer: 8⁄15