Keystones — Cornerstone
Five GCSE retrieval questions · 27 June 2014 · mathsvault.uk/keystones
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1. Number Adding fractions
Add: 1⁄5 + 5⁄6
Answer: 31⁄30 -
2. Algebra Two-step equations
Solve: 6x + 14 = 56
Answer: x = 7 -
3. Geometry Pythagoras — hypotenuse
Calculate the hypotenuse when a = 7cm and b = 8cm. Give your answer to 2 decimal places
Answer: 10.63cm -
4. Ratio Sharing in a ratio
Share 35 in the ratio 3:4
Answer: 15 and 20 -
5. Statistics Mean
Calculate the mean of: 8, 13, 8, 36, 38, 9. Give your answer to 2 decimal places
Answer: 18.67