Keystones — Cornerstone
Five GCSE retrieval questions · 13 September 2023 · mathsvault.uk/keystones
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1. Number
Calculate: 964 + 812
Answer: 964 + 812 = 1776 -
2. Algebra
Solve: 5x = 75
Answer: x = 15 -
3. Geometry
Opposite = 12cm, hypotenuse = 13.9cm. Find the angle
Answer: 60° (approximately) -
4. Ratio
Calculate 50% of 27
Answer: 13.5 -
5. Statistics
A bag has 5 red and 6 blue balls. What is the probability of picking a red ball?
Answer: 5⁄11