Keystones — Lintel
Five GCSE retrieval questions · 17 November 2021 · mathsvault.uk/keystones
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1. Number
Simplify: 9√2 - 4√2
Answer: 5√2 -
2. Algebra
Solve: x⁄7 = 2.5714285714286
Answer: x = 18 -
3. Geometry
A circle has area 530.9cm². Find its radius (dp)
Answer: 13cm -
4. Ratio
Calculate 29.9% of 807
Answer: 241.29 -
5. Statistics
A bag has 4 red and 3 blue balls. What is the probability of picking a red ball?
Answer: 4⁄7