Keystones — Cornerstone
Five GCSE retrieval questions · 8 September 2015 · mathsvault.uk/keystones
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1. Number Adding fractions
Calculate: 6⁄10 + 2⁄10
Answer: 4⁄5 -
2. Algebra Two-step equations
Solve: 2x + 14 = 38
Answer: x = 12 -
3. Geometry Pythagoras — hypotenuse
Calculate the hypotenuse when a = 7cm and b = 10cm. Give your answer to 2 decimal places
Answer: 12.21cm -
4. Ratio Sharing in a ratio
Share 60 in the ratio 1:2
Answer: 20 and 40 -
5. Statistics Mean
Find the mean of: 5, 19, 4, 16
Answer: 11