Keystones — Lintel
Five GCSE retrieval questions · 9 February 2022 · mathsvault.uk/keystones
-
1. Number
Calculate: 571 + 947
Answer: 571 + 947 = 1518 -
2. Algebra
Factorise fully: 25x² + 10x
Answer: 5x(5x + 2) -
3. Geometry
Adjacent = 18cm, hypotenuse = 24cm. Find the angle
Answer: 41.4° -
4. Ratio
Simplify: 15:6:18
Answer: 5:2:6 -
5. Statistics
Calculate the mean of: 50, 46, 27, 31, 44, 48, 21
Answer: 38.1