Keystones — Cornerstone
Five GCSE retrieval questions · 28 April 2022 · mathsvault.uk/keystones
-
1. Number
Calculate: 30 + 40
Answer: 30 + 40 = 70 -
2. Algebra
Solve: 9x = 36
Answer: x = 4 -
3. Geometry
Find the hypotenuse of a right triangle with sides 8cm and 15cm
Answer: 17cm -
4. Ratio
Simplify the ratio 40:30
Answer: 4:3 -
5. Statistics
Calculate the mean of: 16, 14, 13, 43, 41, 10, 37
Answer: 24.9