Keystones — Cornerstone
Five GCSE retrieval questions · 18 November 2016 · mathsvault.uk/keystones
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1. Number Adding fractions
Add: 4⁄6 + 1⁄4
Answer: 11⁄12 -
2. Algebra Two-step equations
Solve: 2x + 12 = 26
Answer: x = 7 -
3. Geometry Pythagoras — hypotenuse
Calculate the hypotenuse when a = 10cm and b = 6cm. Give your answer to 2 decimal places
Answer: 11.66cm -
4. Ratio Sharing in a ratio
Share 85 in the ratio 4:1
Answer: 68 and 17 -
5. Statistics Mean
Find the mean of: 15, 9, 3
Answer: 9