Keystones — Cornerstone
Five GCSE retrieval questions · 15 April 2023 · mathsvault.uk/keystones
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1. Number
What is the missing number: 49 + ? = 179
Answer: 130 -
2. Algebra
Solve: 7x = 63
Answer: x = 9 -
3. Geometry
Find the area of a circle with radius 9cm
Answer: 254.47cm² -
4. Ratio
Simplify: 6:18:9
Answer: 2:6:3 -
5. Statistics
Calculate the mean of: 25, 50, 24, 19, 22, 50
Answer: 31.7