Keystones — Cornerstone
Five GCSE retrieval questions · 6 September 2023 · mathsvault.uk/keystones
-
1. Number
Calculate: 87 + 92
Answer: 87 + 92 = 179 -
2. Algebra
Solve: 5x = 35
Answer: x = 7 -
3. Geometry
Find the perimeter of a right triangle with sides 3cm, 4cm, 5cm
Answer: 12cm -
4. Ratio
Simplify the ratio 8:20
Answer: 2:5 -
5. Statistics
Calculate the mean of: 35, 38, 11, 24, 7, 37, 33, 16
Answer: 25.1