Keystones — Cornerstone
Five GCSE retrieval questions · 1 April 2021 · mathsvault.uk/keystones
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1. Number
Find the total of 105, 297, and 120
Answer: 522 -
2. Algebra
Solve: x + 11 = 23
Answer: x = 12 -
3. Geometry
Find the distance between (2, 4) and (6, 9)
Answer: 6.4 -
4. Ratio
Simplify the ratio 20:25
Answer: 4:5 -
5. Statistics
A bag has 7 red and 3 blue balls. What is the probability of picking a red ball?
Answer: 7⁄10