Keystones — Cornerstone
Five GCSE retrieval questions · 21 August 2021 · mathsvault.uk/keystones
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1. Number
What is the missing number: 54 + ? = 153
Answer: 99 -
2. Algebra
Solve: x + 8 = 11
Answer: x = 3 -
3. Geometry
Calculate the hypotenuse when a = 4cm and b = 9cm
Answer: 9.85cm -
4. Ratio
Simplify: 6:6:18
Answer: 1:1:3 -
5. Statistics
Find the mean of: 19, 7, 16, 4
Answer: 11.5