Keystones — Cornerstone
Five GCSE retrieval questions · 28 March 2023 · mathsvault.uk/keystones
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1. Number
Calculate: 30 + 39
Answer: 30 + 39 = 69 -
2. Algebra
Simplify: 2x + 7x
Answer: 9x -
3. Geometry
Find the hypotenuse of a right triangle with sides 6cm and 8cm
Answer: 10cm -
4. Ratio
Simplify the ratio 28:24
Answer: 7:6 -
5. Statistics
Find the mean of: 3, 14, 15
Answer: 10.666666666667