Keystones — Cornerstone
Five GCSE retrieval questions · 11 December 2022 · mathsvault.uk/keystones
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1. Number
What is the missing number: 31 + ? = 187
Answer: 156 -
2. Algebra
Solve: 7x = 84
Answer: x = 12 -
3. Geometry
Opposite = 12cm, hypotenuse = 13.9cm. Find the angle
Answer: 60° (approximately) -
4. Ratio
Find 30% of 337
Answer: 101.1 -
5. Statistics
Calculate the range of: 93, 97, 34, 78, 31, 92
Answer: 66