Keystones — Cornerstone
Five GCSE retrieval questions · 31 May 2023 · mathsvault.uk/keystones
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1. Number
What is the missing number: 75 + ? = 143
Answer: 68 -
2. Algebra
Expand: 2(x + 8)
Answer: 2x + 16 -
3. Geometry
Calculate the area of a circle with diameter 24cm
Answer: 452.39cm² -
4. Ratio
Simplify: 6:6:15
Answer: 2:2:5 -
5. Statistics
Calculate the range of: 76, 58, 46, 66, 60, 61
Answer: 30