Keystones — Cornerstone
Five GCSE retrieval questions · 26 March 2024 · mathsvault.uk/keystones
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1. Number
What is the missing number: 53 + ? = 159
Answer: 106 -
2. Algebra
Solve: x + 10 = 25
Answer: x = 15 -
3. Geometry
Opposite = 17cm, adjacent = 20cm. Calculate the angle
Answer: 40.4° -
4. Ratio
Simplify the ratio 6:21
Answer: 2:7 -
5. Statistics
Calculate the mean of: 16, 6, 38, 27, 25, 21
Answer: 22.2