Keystones — Cornerstone
Five GCSE retrieval questions · 8 February 2022 · mathsvault.uk/keystones
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1. Number
Calculate: 30 + 57
Answer: 30 + 57 = 87 -
2. Algebra
Collect like terms: 3x + 2y + 3x + 7y
Answer: 6x + 9y -
3. Geometry
Find the area of a circle with radius 4cm
Answer: 50.27cm² -
4. Ratio
Find 29% of 443
Answer: 128.47 -
5. Statistics
A bag has 6 red and 7 blue balls. What is the probability of picking a red ball?
Answer: 6⁄13