Keystones — Cornerstone
Five GCSE retrieval questions · 8 August 2023 · mathsvault.uk/keystones
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1. Number
What is the missing number: 93 + ? = 164
Answer: 71 -
2. Algebra
Solve: 8x = 112
Answer: x = 14 -
3. Geometry
Calculate perimeter: two sides are 8cm and 14cm at right angles
Answer: 38.cm -
4. Ratio
Find 85% of 129
Answer: 109.65 -
5. Statistics
Find the mean of: 4, 20, 3, 2, 13
Answer: 8.4