Keystones — Cornerstone
Five GCSE retrieval questions · 20 February 2023 · mathsvault.uk/keystones
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1. Number
Calculate: 66 + 61
Answer: 66 + 61 = 127 -
2. Algebra
Expand: 2(4x + 2)
Answer: 8x + 4 -
3. Geometry
Find the distance between (2, 1) and (7, 6)
Answer: 7.07 -
4. Ratio
Calculate 50% of 36
Answer: 18 -
5. Statistics
A bag has 6 red and 4 blue balls. What is the probability of picking a red ball?
Answer: 3⁄5