Keystones — Cornerstone
Five GCSE retrieval questions · 26 September 2023 · mathsvault.uk/keystones
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1. Number
What is the missing number: 61 + ? = 198
Answer: 137 -
2. Algebra
Solve: 4x = 60
Answer: x = 15 -
3. Geometry
Opposite = 12cm, hypotenuse = 17cm. Find the angle
Answer: 45° (approximately) -
4. Ratio
Calculate 10% of 134
Answer: 13.4 -
5. Statistics
Find the mean of: 7, 18, 12
Answer: 12.333333333333