Keystones — Cornerstone
Five GCSE retrieval questions · 15 August 2024 · mathsvault.uk/keystones
-
1. Number
Calculate: 26 + 55
Answer: 26 + 55 = 81 -
2. Algebra
Solve: x + 13 = 22
Answer: x = 9 -
3. Geometry
Calculate the area of a circle with diameter 15cm
Answer: 176.71cm² -
4. Ratio
Simplify the ratio 20:25
Answer: 4:5 -
5. Statistics
Calculate the mean of: 20, 42, 43, 17, 38, 48, 28
Answer: 33.7