Keystones — Lintel
Five GCSE retrieval questions · 9 December 2022 · mathsvault.uk/keystones
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1. Number
Calculate: 3⁄6 + 3⁄4 + 1⁄4
Answer: 3⁄2 -
2. Algebra
Solve: x⁄3 = 6.6666666666667
Answer: x = 20 -
3. Geometry
Calculate the area of a circle with diameter 15cm
Answer: 176.71cm² -
4. Ratio
Simplify: 15:18:15
Answer: 5:6:5 -
5. Statistics
A bag has 8 red and 4 blue balls. What is the probability of picking a red ball?
Answer: 2⁄3