Keystones — Cornerstone
Five GCSE retrieval questions · 29 April 2021 · mathsvault.uk/keystones
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1. Number
Calculate: 83 + 31
Answer: 83 + 31 = 114 -
2. Algebra
Solve: x + 2 = 13
Answer: x = 11 -
3. Geometry
Opposite = 12cm, hypotenuse = 17cm. Find the angle
Answer: 45° (approximately) -
4. Ratio
Find 52% of 330
Answer: 171.6 -
5. Statistics
Calculate the mean of: 8, 50, 47, 16, 32, 50, 22
Answer: 32.1