Keystones — Cornerstone
Five GCSE retrieval questions · 8 March 2023 · mathsvault.uk/keystones
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1. Number
What is the missing number: 88 + ? = 161
Answer: 73 -
2. Algebra
Factorise: 18x + 42
Answer: 6(3x + 7) -
3. Geometry
Find the area of a circle with radius 6cm
Answer: 113.cm² -
4. Ratio
Simplify the ratio 16:32
Answer: 1:2 -
5. Statistics
Calculate the range of: 49, 84, 31, 110, 31, 82
Answer: 79