Keystones — Cornerstone
Five GCSE retrieval questions · 8 October 2021 · mathsvault.uk/keystones
-
1. Number
Calculate: 28 + 46
Answer: 28 + 46 = 74 -
2. Algebra
Solve: x + 8 = 28
Answer: x = 20 -
3. Geometry
Opposite = 20cm, adjacent = 10cm. Calculate the angle
Answer: 63.4° -
4. Ratio
Simplify the ratio 24:21
Answer: 8:7 -
5. Statistics
Find the mean of: 13, 12, 7, 17
Answer: 12.25