Keystones — Capstone
Five GCSE retrieval questions · 3 June 2023 · mathsvault.uk/keystones
-
1. Number
Calculate: 996 + 565
Answer: 1561 -
2. Algebra
Solve: x⁄4 = 1.5
Answer: x = 6 -
3. Geometry
Find c if a = 20cm and b = 24cm in a right triangle
Answer: 31.2cm -
4. Ratio
Simplify the ratio 8m:800cm
Answer: 1:100 -
5. Statistics
The mean of 5 numbers is 21. If 4 of them are 47, 31, 28, 42, what is the missing number?
Answer: -43