Keystones — Cornerstone
Five GCSE retrieval questions · 4 January 2025 · mathsvault.uk/keystones
-
1. Number
What is the missing number: 66 + ? = 193
Answer: 127 -
2. Algebra
Find the next term: 7, 14, 21, 28, ...
Answer: 35 -
3. Geometry
Opposite = 7cm, hypotenuse = 9.9cm. Find the angle
Answer: 45° (approximately) -
4. Ratio
Simplify the ratio 9:6
Answer: 3:2 -
5. Statistics
Calculate the mean of: 8, 7, 18, 20, 17, 50, 33, 24
Answer: 22.1