Keystones — Cornerstone
Five GCSE retrieval questions · 10 May 2016 · mathsvault.uk/keystones
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1. Number Adding fractions
Add: 3⁄8 + 2⁄6
Answer: 17⁄24 -
2. Algebra Two-step equations
Solve: 4x - 12 = 8
Answer: x = 5 -
3. Geometry Pythagoras — hypotenuse
Calculate the hypotenuse when a = 12cm and b = 6cm. Give your answer to 2 decimal places
Answer: 13.42cm -
4. Ratio Sharing in a ratio
Share 60 in the ratio 2:1
Answer: 40 and 20 -
5. Statistics Mean
Find the mean of: 18, 7, 8
Answer: 11