Keystones — Lintel
Five GCSE retrieval questions · 10 March 2023 · mathsvault.uk/keystones
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1. Number
Calculate: 9.87 + 82.81 + 0.412
Answer: 9.87 + 82.81 + 0.412 = 93.092 -
2. Algebra
Factorise: 8x² + 2x
Answer: 2x(4x + 1) -
3. Geometry
Opposite = 8cm, adjacent = 9cm. Calculate the angle
Answer: 41.6° -
4. Ratio
Simplify the ratio 7m:700cm
Answer: 1:100 -
5. Statistics
A bag has 4 red and 6 blue balls. What is the probability of picking a red ball?
Answer: 2⁄5