Keystones — Cornerstone
Five GCSE retrieval questions · 4 June 2021 · mathsvault.uk/keystones
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1. Number
What is the missing number: 31 + ? = 190
Answer: 159 -
2. Algebra
Expand: 8(x + 3)
Answer: 8x + 24 -
3. Geometry
Opposite = 10cm, adjacent = 10cm. Calculate the angle
Answer: 45° -
4. Ratio
Find 28% of 125
Answer: 35 -
5. Statistics
Calculate the mean of: 36, 36, 8, 23, 19, 38
Answer: 26.7