Keystones — Cornerstone
Five GCSE retrieval questions · 9 September 2022 · mathsvault.uk/keystones
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1. Number
What is the missing number: 33 + ? = 113
Answer: 80 -
2. Algebra
For y = x³ + 4, calculate y when x = 3
Answer: y = 31 -
3. Geometry
Opposite = 14cm, hypotenuse = 16.2cm. Find the angle
Answer: 60° (approximately) -
4. Ratio
Simplify the ratio 28:12
Answer: 7:3 -
5. Statistics
Calculate the mean of: 17, 47, 7, 47, 34, 39, 48
Answer: 34.1