Keystones — Cornerstone
Five GCSE retrieval questions · 22 November 2021 · mathsvault.uk/keystones
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1. Number
Find the total of 243, 256, and 80
Answer: 579 -
2. Algebra
Solve: x + 13 = 29
Answer: x = 16 -
3. Geometry
Opposite = 14cm, adjacent = 12cm. Calculate the angle
Answer: 49.4° -
4. Ratio
Simplify the ratio 20:8
Answer: 5:2 -
5. Statistics
A bag has 5 red and 6 blue balls. What is the probability of picking a red ball?
Answer: 5⁄11