Keystones — Cornerstone
Five GCSE retrieval questions · 25 August 2021 · mathsvault.uk/keystones
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1. Number
Calculate: 73 + 34
Answer: 73 + 34 = 107 -
2. Algebra
Expand: 5(x + 6)
Answer: 5x + 30 -
3. Geometry
Find the hypotenuse of a right triangle with sides 3cm and 4cm
Answer: 5cm -
4. Ratio
Calculate 50% of 155
Answer: 77.5 -
5. Statistics
Calculate the mean of: 34, 38, 17, 10, 37, 44
Answer: 30