Keystones — Cornerstone
Five GCSE retrieval questions · 7 June 2023 · mathsvault.uk/keystones
-
1. Number
Calculate: 71 + 68
Answer: 71 + 68 = 139 -
2. Algebra
Factorise: 28x + 24
Answer: 4(7x + 6) -
3. Geometry
Opposite = 11cm, adjacent = 17cm. Calculate the angle
Answer: 32.9° -
4. Ratio
Simplify the ratio 12:10
Answer: 6:5 -
5. Statistics
Find the mean of: 3, 20, 19
Answer: 14