Keystones — Lintel
Five GCSE retrieval questions · 31 March 2023 · mathsvault.uk/keystones
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1. Number
Calculate: 3⁄6 + 2⁄4 + 2⁄5
Answer: 7⁄5 -
2. Algebra
Solve: x⁄6 = 1.1666666666667
Answer: x = 7 -
3. Geometry
Find c if a = 19cm and b = 21cm in a right triangle
Answer: 28.3cm -
4. Ratio
Calculate 10.5% of 440
Answer: 46.2 -
5. Statistics
A bag has 7 red and 4 blue balls. What is the probability of picking a red ball?
Answer: 7⁄11