Keystones — Cornerstone
Five GCSE retrieval questions · 7 September 2021 · mathsvault.uk/keystones
-
1. Number
What is the missing number: 84 + ? = 147
Answer: 63 -
2. Algebra
Solve: x + 7 = 11
Answer: x = 4 -
3. Geometry
Opposite = 9cm, hypotenuse = 10.4cm. Find the angle
Answer: 60° (approximately) -
4. Ratio
Simplify: 6:6:12
Answer: 1:1:2 -
5. Statistics
Calculate the mean of: 35, 5, 16, 35, 13, 27, 35
Answer: 23.7