Keystones — Cornerstone
Five GCSE retrieval questions · 3 September 2022 · mathsvault.uk/keystones
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1. Number
What is the missing number: 88 + ? = 169
Answer: 81 -
2. Algebra
Solve: x + 11 = 21
Answer: x = 10 -
3. Geometry
Opposite = 7cm, hypotenuse = 9.9cm. Find the angle
Answer: 45° (approximately) -
4. Ratio
Simplify: 16:20:12
Answer: 4:5:3 -
5. Statistics
Calculate the range of: 57, 87, 75, 43, 24, 59
Answer: 63