Keystones — Cornerstone
Five GCSE retrieval questions · 5 June 2022 · mathsvault.uk/keystones
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1. Number
Calculate: -29 + (-19)
Answer: -48 -
2. Algebra
Expand: 2(4x + 6)
Answer: 8x + 12 -
3. Geometry
Opposite = 11cm, adjacent = 9cm. Calculate the angle
Answer: 50.7° -
4. Ratio
Simplify the ratio 12:32
Answer: 3:8 -
5. Statistics
A bag has 5 red and 6 blue balls. What is the probability of picking a red ball?
Answer: 5⁄11