Keystones — Lintel
Five GCSE retrieval questions · 19 April 2021 · mathsvault.uk/keystones
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1. Number
Calculate: 992 + 802
Answer: 1794 -
2. Algebra
Factorise: 8x² + 4x
Answer: 4x(2x + 1) -
3. Geometry
Opposite = 12cm, adjacent = 9cm. Calculate the angle
Answer: 53.1° -
4. Ratio
Simplify the ratio 4m:400cm
Answer: 1:100 -
5. Statistics
A bag has 5 red and 3 blue balls. What is the probability of picking a red ball?
Answer: 5⁄8