Keystones — Cornerstone
Five GCSE retrieval questions · 11 May 2022 · mathsvault.uk/keystones
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1. Number
What is the missing number: 63 + ? = 152
Answer: 89 -
2. Algebra
Solve: x + 5 = 17
Answer: x = 12 -
3. Geometry
Calculate perimeter: two sides are 11cm and 9cm at right angles
Answer: 34.2cm -
4. Ratio
Simplify: 24:16:8
Answer: 3:2:1 -
5. Statistics
Find the range of: 39, 20, 20, 32, 28
Answer: 19