Keystones — Cornerstone
Five GCSE retrieval questions · 4 April 2012 · 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: 7x + 4 = 67
Answer: x = 9 -
3. Geometry Pythagoras — hypotenuse
Calculate the hypotenuse when a = 4cm and b = 13cm. Give your answer to 2 decimal places
Answer: 13.6cm -
4. Ratio Sharing in a ratio
Share 44 in the ratio 3:1
Answer: 33 and 11 -
5. Statistics Mean
Find the mean of: 17, 7, 9
Answer: 11