Keystones — Cornerstone
Five GCSE retrieval questions · 21 July 2022 · mathsvault.uk/keystones
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1. Number
What is the missing number: 92 + ? = 182
Answer: 90 -
2. Algebra
Solve: x + 6 = 21
Answer: x = 15 -
3. Geometry
Opposite = 10cm, hypotenuse = 14.cm. Find the angle
Answer: 45° (approximately) -
4. Ratio
Calculate 10% of 158
Answer: 15.8 -
5. Statistics
Calculate the mean of: 50, 49, 45, 14, 19, 34
Answer: 35.2