Keystones — Cornerstone
Five GCSE retrieval questions · 17 August 2015 · mathsvault.uk/keystones
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1. Number Adding fractions
Add: 3⁄6 + 2⁄4
Answer: 1⁄1 -
2. Algebra Two-step equations
Solve: 7x + 6 = 76
Answer: x = 10 -
3. Geometry Pythagoras — hypotenuse
Calculate the hypotenuse when a = 7cm and b = 5cm. Give your answer to 2 decimal places
Answer: 8.6cm -
4. Ratio Sharing in a ratio
Share 52 in the ratio 3:1
Answer: 39 and 13 -
5. Statistics Mean
Find the mean of: 25, 11, 12, 12
Answer: 15