Keystones — Cornerstone
Five GCSE retrieval questions · 18 March 2022 · mathsvault.uk/keystones
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1. Number
What is the missing number: 33 + ? = 104
Answer: 71 -
2. Algebra
Solve: 6x = 66
Answer: x = 11 -
3. Geometry
Opposite = 5cm, hypotenuse = 7.cm. Find the angle
Answer: 45° (approximately) -
4. Ratio
Find 77% of 122
Answer: 93.94 -
5. Statistics
Calculate the mean of: 25, 12, 43, 18, 37, 31, 18, 43
Answer: 28.4