Keystones — Cornerstone
Five GCSE retrieval questions · 10 September 2023 · mathsvault.uk/keystones
-
1. Number
Calculate: 66 + 74
Answer: 66 + 74 = 140 -
2. Algebra
Factorise: 4x² + 8x
Answer: 4x(x + 2) -
3. Geometry
Opposite = 12cm, adjacent = 8cm. Calculate the angle
Answer: 56.3° -
4. Ratio
Calculate 50% of 145
Answer: 72.5 -
5. Statistics
Calculate the mean of: 49, 39, 33, 5, 18, 43, 35, 36
Answer: 32.3