Keystones — Lintel
Five GCSE retrieval questions · 6 December 2022 · mathsvault.uk/keystones
-
1. Number
Calculate: 991 + 571
Answer: 1562 -
2. Algebra
Solve: 8x + 12 = 6x - 3
Answer: x = 7.5 -
3. Geometry
Calculate the area of a circle with diameter 9cm
Answer: 63.62cm² -
4. Ratio
Simplify: 9:18:15
Answer: 3:6:5 -
5. Statistics
Calculate the mean of: 36, 6, 13, 31, 9, 39, 21
Answer: 22.1