Keystones — Cornerstone
Five GCSE retrieval questions · 23 February 2024 · mathsvault.uk/keystones
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1. Number
What is 5 + 3.6 + 0.47?
Answer: 5 + 3.6 + 0.47 = 9.07 -
2. Algebra
Simplify: 2x + 8x
Answer: 10x -
3. Geometry
Calculate the area of a circle with diameter 20cm
Answer: 314.16cm² -
4. Ratio
Simplify the ratio 10:8
Answer: 5:4 -
5. Statistics
A bag has 5 red and 4 blue balls. What is the probability of picking a red ball?
Answer: 5⁄9