Keystones — Lintel
Five GCSE retrieval questions · 17 May 2022 · mathsvault.uk/keystones
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1. Number
The sum of three consecutive numbers is 150. What are the numbers?
Answer: 49, 50, and 51 -
2. Algebra
Solve: 9x = 90
Answer: x = 10 -
3. Geometry
Opposite = 16cm, adjacent = 16cm. Calculate the angle
Answer: 45° -
4. Ratio
Calculate 35.5% of 650
Answer: 230.75 -
5. Statistics
A bag has 3 red and 8 blue balls. What is the probability of picking a red ball?
Answer: 3⁄11