Keystones — Lintel
Five GCSE retrieval questions · 1 August 2024 · mathsvault.uk/keystones
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1. Number
Find the missing number: 2.53 + □ = 10.37
Answer: □ = 7.84 -
2. Algebra
Factorise: 7x² + 4x
Answer: x(7x + 4) -
3. Geometry
Opposite = 15cm, adjacent = 10cm. Calculate the angle
Answer: 56.3° -
4. Ratio
Calculate 21% of 649
Answer: 136.29 -
5. Statistics
A bag has 8 red and 6 blue balls. What is the probability of picking a red ball?
Answer: 4⁄7