Keystones — Cornerstone
Five GCSE retrieval questions · 15 August 2019 · mathsvault.uk/keystones
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1. Number Adding fractions
Add: 5⁄6 + 2⁄7
Answer: 47⁄42 -
2. Algebra Two-step equations
Solve: 3x - 20 = -2
Answer: x = 6 -
3. Geometry Pythagoras — hypotenuse
Calculate the hypotenuse when a = 5cm and b = 12cm
Answer: 13cm -
4. Ratio Sharing in a ratio
Divide 52 in the ratio 1:2:1
Answer: 13, 26 and 13 -
5. Statistics Mean
Find the mean of: 7, 18, 17
Answer: 14