Keystones — Cornerstone
Five GCSE retrieval questions · 5 January 2014 · mathsvault.uk/keystones
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1. Number Adding fractions
Add: 1⁄4 + 1⁄6
Answer: 5⁄12 -
2. Algebra Two-step equations
Solve: 3x + 12 = 24
Answer: x = 4 -
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 4:1
Answer: 28 and 7 -
5. Statistics Mean
Find the mean of: 14, 5, 17, 22, 7
Answer: 13