Keystones — Cornerstone
Five GCSE retrieval questions · 9 March 2015 · mathsvault.uk/keystones
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1. Number Adding fractions
Add: 2⁄3 + 2⁄4
Answer: 7⁄6 -
2. Algebra Two-step equations
Solve: 6x - 6 = 24
Answer: x = 5 -
3. Geometry Pythagoras — hypotenuse
Calculate the hypotenuse when a = 5cm and b = 10cm. Give your answer to 2 decimal places
Answer: 11.18cm -
4. Ratio Sharing in a ratio
Share 45 in the ratio 3:2
Answer: 27 and 18 -
5. Statistics Mean
Find the mean of: 25, 10, 2, 11, 2
Answer: 10