Keystones — Cornerstone
Five GCSE retrieval questions · 20 October 2022 · mathsvault.uk/keystones
-
1. Number
Calculate: 60 + 80
Answer: 60 + 80 = 140 -
2. Algebra
Solve: x + 6 = 26
Answer: x = 20 -
3. Geometry
Find the area of a circle with radius 5cm
Answer: 78.54cm² -
4. Ratio
Simplify the ratio 20:32
Answer: 5:8 -
5. Statistics
Calculate the mean of: 42, 42, 38, 5, 47, 18, 21, 50
Answer: 32.9