Keystones — Cornerstone
Five GCSE retrieval questions · 4 May 2021 · mathsvault.uk/keystones
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1. Number
What is the missing number: 80 + ? = 194
Answer: 114 -
2. Algebra
Factorise: 21x + 24
Answer: 3(7x + 8) -
3. Geometry
Opposite = 15cm, hypotenuse = 17.3cm. Find the angle
Answer: 60° (approximately) -
4. Ratio
Calculate 10% of 175
Answer: 17.5 -
5. Statistics
Calculate the mean of: 17, 17, 23, 32, 32, 48
Answer: 28.2