Keystones — Bedrock
Five GCSE retrieval questions · 10 October 2021 · mathsvault.uk/keystones
-
1. Number
Calculate: 12 + 39
Answer: 12 + 39 = 51 -
2. Algebra
Simplify: 3x + 9x
Answer: 12x -
3. Geometry
Opposite = 6cm, hypotenuse = 8.5cm. Find the angle
Answer: 45° (approximately) -
4. Ratio
Simplify the ratio 12:24
Answer: 1:2 -
5. Statistics
Find the mean of: 5, 15, 18
Answer: 12.666666666667