Keystones — Cornerstone
Five GCSE retrieval questions · 23 April 2022 · mathsvault.uk/keystones
-
1. Number
What is the missing number: 70 + ? = 174
Answer: 104 -
2. Algebra
Solve: 5x - 5 = 3x + 1
Answer: x = 3 -
3. Geometry
Calculate perimeter: two sides are 12cm and 6cm at right angles
Answer: 31.4cm -
4. Ratio
Simplify: 9:6:6
Answer: 3:2:2 -
5. Statistics
Find the mean of: 18, 13, 7, 2
Answer: 10