Keystones — Lintel
Five GCSE retrieval questions · 13 October 2023 · mathsvault.uk/keystones
-
1. Number
Calculate: (-28) + (-17) + (-8)
Answer: -53 -
2. Algebra
Factorise: 8x² + 9x
Answer: x(8x + 9) -
3. Geometry
Adjacent = 22cm, hypotenuse = 32cm. Find the angle
Answer: 46.6° -
4. Ratio
Simplify: 6:18:15
Answer: 2:6:5 -
5. Statistics
A bag has 4 red and 8 blue balls. What is the probability of picking a red ball?
Answer: 1⁄3