Keystones — Cornerstone
Five GCSE retrieval questions · 14 February 2023 · mathsvault.uk/keystones
-
1. Number
Calculate: 12 + (46)
Answer: 58 -
2. Algebra
Solve: x + 8 = 28
Answer: x = 20 -
3. Geometry
Calculate the hypotenuse when a = 6cm and b = 13cm
Answer: 14.32cm -
4. Ratio
Simplify the ratio 18:9
Answer: 2:1 -
5. Statistics
Calculate the mean of: 36, 23, 11, 38, 36, 42, 13, 40
Answer: 29.9