Keystones — Lintel
Five GCSE retrieval questions · 22 April 2022 · mathsvault.uk/keystones
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1. Number
Calculate: 3⁄6 + 1⁄2 + 2⁄4
Answer: 3⁄2 -
2. Algebra
Factorise fully: 28x² + 24x
Answer: 4x(7x + 6) -
3. Geometry
Calculate the area of a right triangle with perpendicular sides 15cm and 7cm
Answer: 52.5cm² -
4. Ratio
Simplify: 6:6:8
Answer: 3:3:4 -
5. Statistics
A spinner has 6 red, 4 blue and 3 green sections. Probability of landing on red?
Answer: 6⁄13