Keystones — Lintel
Five GCSE retrieval questions · 25 July 2021 · mathsvault.uk/keystones
-
1. Number
What is the missing number: 51 + ? = 198
Answer: 147 -
2. Algebra
Factorise fully: 10x² + 35x
Answer: 5x(2x + 7) -
3. Geometry
Calculate the hypotenuse when a = 12cm and b = 5cm
Answer: 13cm -
4. Ratio
Simplify the ratio 7m:700cm
Answer: 1:100 -
5. Statistics
A spinner has 6 red, 4 blue and 6 green sections. Probability of landing on red?
Answer: 3⁄8