Keystones — Cornerstone
Five GCSE retrieval questions · 21 June 2023 · mathsvault.uk/keystones
-
1. Number
Calculate: 88 + 28
Answer: 88 + 28 = 116 -
2. Algebra
Factorise: 3x² + 9x
Answer: 3x(x + 3) -
3. Geometry
Find the area of a circle with radius 3cm
Answer: 28.27cm² -
4. Ratio
Simplify: 12:16:8
Answer: 3:4:2 -
5. Statistics
Calculate the range of: 75, 49, 61, 39, 80, 68
Answer: 41