Keystones — Lintel
Five GCSE retrieval questions · 15 December 2022 · mathsvault.uk/keystones
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1. Number
Calculate: 999 + 879
Answer: 1878 -
2. Algebra
Expand: 6(6x + 4)
Answer: 36x + 24 -
3. Geometry
Find c if a = 10cm and b = 19cm in a right triangle
Answer: 21.5cm -
4. Ratio
Simplify the ratio 8m:800cm
Answer: 1:100 -
5. Statistics
A bag has 4 red and 6 blue balls. What is the probability of picking a red ball?
Answer: 2⁄5