Keystones — Bedrock
Five GCSE retrieval questions · 13 April 2019 · mathsvault.uk/keystones
-
1. Number Adding whole numbers
Calculate: 39 + 39
Answer: 39 + 39 = 78 -
2. Algebra Substitution
If x = 9, find the value of 2x + 12
Answer: 30 -
3. Geometry Converting lengths
Convert 10cm to mm
Answer: 100mm -
4. Ratio Simplifying ratios
Simplify the ratio 32:28
Answer: 8:7 -
5. Statistics Mean
Find the mean of: 9, 12, 20, 10
Answer: 12.75