Keystones — Cornerstone
Five GCSE retrieval questions · 15 May 2022 · mathsvault.uk/keystones
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1. Number
Calculate: 50 + 53
Answer: 50 + 53 = 103 -
2. Algebra
Expand: 5(x + 5)
Answer: 5x + 25 -
3. Geometry
Opposite = 12cm, hypotenuse = 24cm. Find the angle
Answer: 30° (approximately) -
4. Ratio
Calculate 50% of 178
Answer: 89 -
5. Statistics
Calculate the mean of: 14, 34, 20, 11, 42, 36
Answer: 26.2