Keystones — Cornerstone
Five GCSE retrieval questions · 15 June 2021 · mathsvault.uk/keystones
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1. Number
Calculate: 251 + 375
Answer: 251 + 375 = 626 -
2. Algebra
For y = x³, find y when x = 5
Answer: y = 125 -
3. Geometry
Opposite = 6cm, hypotenuse = 6.9cm. Find the angle
Answer: 60° (approximately) -
4. Ratio
Simplify the ratio 10:8
Answer: 5:4 -
5. Statistics
Find the mean of: 13, 15, 17, 9
Answer: 13.5