Keystones — Cornerstone
Five GCSE retrieval questions · 3 June 2016 · mathsvault.uk/keystones
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1. Number Adding fractions
Add: 1⁄8 + 1⁄4
Answer: 3⁄8 -
2. Algebra Two-step equations
Solve: 6x + 10 = 40
Answer: x = 5 -
3. Geometry Pythagoras — hypotenuse
Calculate the hypotenuse when a = 4cm and b = 8cm. Give your answer to 2 decimal places
Answer: 8.94cm -
4. Ratio Sharing in a ratio
Share 25 in the ratio 4:1
Answer: 20 and 5 -
5. Statistics Mean
Find the mean of: 4, 1, 15, 13, 2
Answer: 7