Keystones — Cornerstone
Five GCSE retrieval questions · 22 December 2021 · mathsvault.uk/keystones
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1. Number
What is the missing number: 47 + ? = 157
Answer: 110 -
2. Algebra
Solve: x + 14 = 29
Answer: x = 15 -
3. Geometry
Find the perimeter of a right triangle with sides 3cm, 4cm, 5cm
Answer: 12cm -
4. Ratio
Simplify: 16:12:24
Answer: 4:3:6 -
5. Statistics
Calculate the range of: 90, 53, 64, 24, 55, 92
Answer: 68