Keystones — Cornerstone
Five GCSE retrieval questions · 16 December 2021 · mathsvault.uk/keystones
-
1. Number
Calculate: 87 + 30
Answer: 87 + 30 = 117 -
2. Algebra
Solve: 5x = 30
Answer: x = 6 -
3. Geometry
Calculate the area of a circle with diameter 17cm
Answer: 226.98cm² -
4. Ratio
Simplify: 4:10:8
Answer: 2:5:4 -
5. Statistics
Calculate the mean of: 26, 21, 39, 49, 26, 6, 43
Answer: 30