Keystones — Cornerstone
Five GCSE retrieval questions · 3 April 2022 · mathsvault.uk/keystones
-
1. Number
Calculate: 90 + 55
Answer: 90 + 55 = 145 -
2. Algebra
For y = x³ + 15, calculate y when x = 3
Answer: y = 42 -
3. Geometry
Calculate the hypotenuse when a = 5cm and b = 7cm
Answer: 8.6cm -
4. Ratio
Simplify: 15:12:6
Answer: 5:4:2 -
5. Statistics
Calculate the mean of: 26, 13, 18, 18, 17, 32, 17
Answer: 20.1