Keystones — Cornerstone
Five GCSE retrieval questions · 21 June 2022 · mathsvault.uk/keystones
-
1. Number
What is the missing number: 79 + ? = 128
Answer: 49 -
2. Algebra
Collect like terms: 8x + 4y + 4x + 8y
Answer: 12x + 12y -
3. Geometry
Opposite = 7cm, hypotenuse = 14cm. Find the angle
Answer: 30° (approximately) -
4. Ratio
Simplify: 12:16:20
Answer: 3:4:5 -
5. Statistics
Calculate the mean of: 34, 34, 35, 46, 44, 23, 13, 11
Answer: 30