Keystones — Cornerstone
Five GCSE retrieval questions · 22 March 2023 · mathsvault.uk/keystones
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1. Number
Calculate: 99 + 28
Answer: 99 + 28 = 127 -
2. Algebra
Solve: 7x = 49
Answer: x = 7 -
3. Geometry
Find the hypotenuse of a right triangle with sides 3cm and 4cm
Answer: 5cm -
4. Ratio
Simplify: 8:12:12
Answer: 2:3:3 -
5. Statistics
Find the range of: 36, 22, 29, 9, 28
Answer: 27