Keystones — Lintel
Five GCSE retrieval questions · 21 April 2021 · mathsvault.uk/keystones
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1. Number
The sum of three consecutive numbers is 108. What are the numbers?
Answer: 35, 36, and 37 -
2. Algebra
Solve: 5x + 8 = 3x - 5
Answer: x = 6.5 -
3. Geometry
Opposite = 9cm, adjacent = 18cm. Calculate the angle
Answer: 26.6° -
4. Ratio
Simplify the ratio 5m:500cm
Answer: 1:100 -
5. Statistics
A bag has 4 red and 7 blue balls. What is the probability of picking a red ball?
Answer: 4⁄11