Keystones — Cornerstone
Five GCSE retrieval questions · 24 November 2021 · mathsvault.uk/keystones
-
1. Number
Calculate: 67 + 50
Answer: 67 + 50 = 117 -
2. Algebra
Solve: 8x = 40
Answer: x = 5 -
3. Geometry
Find the perimeter of a right triangle with sides 6cm, 8cm, 10cm
Answer: 24cm -
4. Ratio
Find 66% of 280
Answer: 184.8 -
5. Statistics
Calculate the mean of: 10, 49, 21, 10, 14, 41
Answer: 24.2