Keystones — Lintel
Five GCSE retrieval questions · 2 December 2021 · mathsvault.uk/keystones
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1. Number
Calculate: 997 + 883
Answer: 1880 -
2. Algebra
Solve: x⁄4 = 2.5
Answer: x = 10 -
3. Geometry
Calculate the perimeter of a right triangle with sides 7cm and 11cm
Answer: 31cm -
4. Ratio
Find 41% of 477
Answer: 195.57 -
5. Statistics
A bag has 3 red and 8 blue balls. What is the probability of picking a red ball?
Answer: 3⁄11