Keystones — Lintel
Five GCSE retrieval questions · 29 December 2021 · mathsvault.uk/keystones
-
1. Number
The sum of three consecutive numbers is 126. What are the numbers?
Answer: 41, 42, and 43 -
2. Algebra
Solve: x⁄5 = 4.2
Answer: x = 21 -
3. Geometry
Find c if a = 14cm and b = 20cm in a right triangle
Answer: 24.4cm -
4. Ratio
Simplify the ratio 6m:600cm
Answer: 1:100 -
5. Statistics
Calculate the mean of: 11, 41, 39, 42, 42, 32, 18, 5
Answer: 28.8