Keystones — Lintel
Five GCSE retrieval questions · 26 March 2021 · mathsvault.uk/keystones
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1. Number
What is the missing number: 30 + ? = 121
Answer: 91 -
2. Algebra
Solve: 6x = 18
Answer: x = 3 -
3. Geometry
Calculate the hypotenuse when a = 5cm and b = 10cm
Answer: 11.18cm -
4. Ratio
Find 56% of 107
Answer: 59.92 -
5. Statistics
Calculate the mean of: 45, 32, 40, 40, 16, 11, 8, 21
Answer: 26.6