Keystones — Lintel
Five GCSE retrieval questions · 29 October 2021 · mathsvault.uk/keystones
-
1. Number
Calculate: (-17) + (-29) + (-19)
Answer: -65 -
2. Algebra
Solve: 2x = 20
Answer: x = 10 -
3. Geometry
Opposite = 18cm, adjacent = 9cm. Calculate the angle
Answer: 63.4° -
4. Ratio
Simplify the ratio 8m:800cm
Answer: 1:100 -
5. Statistics
A bag has 6 red and 7 blue balls. What is the probability of picking a red ball?
Answer: 6⁄13