Keystones — Lintel
Five GCSE retrieval questions · 21 March 2023 · mathsvault.uk/keystones
-
1. Number
What is the missing number: 68 + ? = 110
Answer: 42 -
2. Algebra
Factorise: 9x² + 7x
Answer: x(9x + 7) -
3. Geometry
Adjacent = 22cm, hypotenuse = 30cm. Find the angle
Answer: 42.8° -
4. Ratio
Simplify: 6:12:6
Answer: 1:2:1 -
5. Statistics
Calculate the mean of: 38, 28, 39, 16, 6, 27, 38, 40
Answer: 29