Keystones — Lintel
Five GCSE retrieval questions · 10 March 2022 · mathsvault.uk/keystones
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1. Number
What is the missing number: 79 + ? = 191
Answer: 112 -
2. Algebra
Factorise: 8x² + 3x
Answer: x(8x + 3) -
3. Geometry
Calculate perimeter: two sides are 12cm and 15cm at right angles
Answer: 46.2cm -
4. Ratio
Simplify the ratio 7m:700cm
Answer: 1:100 -
5. Statistics
Calculate the mean of: 19, 46, 16, 49, 13, 41
Answer: 30.7