Keystones — Lintel
Five GCSE retrieval questions · 11 February 2024 · mathsvault.uk/keystones
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1. Number
What is the missing number: 54 + ? = 170
Answer: 116 -
2. Algebra
Factorise fully: 15x² + 21x
Answer: 3x(5x + 7) -
3. Geometry
A right triangle has hypotenuse 10cm and one side 6cm. Find its area
Answer: 24cm² -
4. Ratio
Find 42% of 178
Answer: 74.76 -
5. Statistics
Find the range of: -16, 6, 24, 1, 42
Answer: 58