Keystones — Lintel
Five GCSE retrieval questions · 19 May 2021 · mathsvault.uk/keystones
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1. Number
The sum of three consecutive numbers is 123. What are the numbers?
Answer: 40, 41, and 42 -
2. Algebra
Solve: x⁄8 = 5
Answer: x = 40 -
3. Geometry
Opposite = 8cm, adjacent = 14cm. Calculate the angle
Answer: 29.7° -
4. Ratio
Simplify: 12:4:12
Answer: 3:1:3 -
5. Statistics
A bag has 4 red and 7 blue balls. What is the probability of picking a red ball?
Answer: 4⁄11