Keystones — Cornerstone
Five GCSE retrieval questions · 28 June 2014 · mathsvault.uk/keystones
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1. Number Adding fractions
Add: 2⁄8 + 4⁄5
Answer: 21⁄20 -
2. Algebra Two-step equations
Solve: 5x + 7 = 57
Answer: x = 10 -
3. Geometry Pythagoras — hypotenuse
Calculate the hypotenuse when a = 8cm and b = 14cm. Give your answer to 2 decimal places
Answer: 16.12cm -
4. Ratio Sharing in a ratio
Share 40 in the ratio 3:2
Answer: 24 and 16 -
5. Statistics Mean
Calculate the mean of: 20, 14, 50, 36, 18, 13. Give your answer to 2 decimal places
Answer: 25.17