Keystones — Bedrock
Five GCSE retrieval questions · 15 September 2011 · mathsvault.uk/keystones
-
1. Number Adding whole numbers
Calculate: 30 + 59
Answer: 30 + 59 = 89 -
2. Algebra Substitution
If x = 5, find the value of 2x + 9
Answer: 19 -
3. Geometry Converting lengths
Convert 10m to cm
Answer: 1000cm -
4. Ratio Simplifying ratios
Simplify the ratio 21:24
Answer: 7:8 -
5. Statistics Mean
Find the mean of: 20, 5, 5, 2
Answer: 8