Keystones — Bedrock
Five GCSE retrieval questions · 24 August 2013 · mathsvault.uk/keystones
-
1. Number Adding whole numbers
Calculate: 42 + 39
Answer: 42 + 39 = 81 -
2. Algebra Substitution
If x = 3, find the value of 6x + 12
Answer: 30 -
3. Geometry Converting lengths
Convert 27cm to mm
Answer: 270mm -
4. Ratio Simplifying ratios
Simplify the ratio 25:35
Answer: 5:7 -
5. Statistics Mean
Find the mean of: 25, 11, 9
Answer: 15