Keystones — Cornerstone
Five GCSE retrieval questions · 22 July 2021 · mathsvault.uk/keystones
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1. Number
What is the missing number: 73 + ? = 158
Answer: 85 -
2. Algebra
Solve: x + 13 = 31
Answer: x = 18 -
3. Geometry
Opposite = 11cm, hypotenuse = 12.7cm. Find the angle
Answer: 60° (approximately) -
4. Ratio
Find 77% of 316
Answer: 243.32 -
5. Statistics
Find the range of: 25, 27, 24, 25, 12
Answer: 15