Keystones — Cornerstone
Five GCSE retrieval questions · 28 August 2021 · mathsvault.uk/keystones
-
1. Number
Calculate: 63 + 61
Answer: 63 + 61 = 124 -
2. Algebra
Solve: 9x = 99
Answer: x = 11 -
3. Geometry
Find the hypotenuse of a right triangle with sides 8cm and 15cm
Answer: 17cm -
4. Ratio
Simplify the ratio 4:14
Answer: 2:7 -
5. Statistics
Find the mean of: 6, 10, 15
Answer: 10.333333333333