Keystones — Cornerstone
Five GCSE retrieval questions · 25 December 2021 · mathsvault.uk/keystones
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1. Number
What is the missing number: 94 + ? = 129
Answer: 35 -
2. Algebra
Simplify: 7x + 2x
Answer: 9x -
3. Geometry
Find the area of a right triangle with base 12cm and height 12cm
Answer: 72cm² -
4. Ratio
Calculate 25% of 50
Answer: 12.5 -
5. Statistics
Find the mean of: 10, 2, 16, 12, 2
Answer: 8.4