Keystones — Cornerstone
Five GCSE retrieval questions · 25 May 2025 · mathsvault.uk/keystones
-
1. Number
Calculate: 39 + 80
Answer: 39 + 80 = 119 -
2. Algebra
Find the next term: 12, 14, 16, 18, ...
Answer: 20 -
3. Geometry
Find the hypotenuse of a right triangle with sides 6cm and 8cm
Answer: 10cm -
4. Ratio
Simplify: 4:12:12
Answer: 1:3:3 -
5. Statistics
Find the mean of: 12, 20, 15, 6
Answer: 13.25