Keystones — Cornerstone
Five GCSE retrieval questions · 26 May 2013 · mathsvault.uk/keystones
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1. Number Adding fractions
Calculate: 4⁄10 + 4⁄10
Answer: 4⁄5 -
2. Algebra Two-step equations
Solve: 5x + 5 = 65
Answer: x = 12 -
3. Geometry Pythagoras — hypotenuse
Calculate the hypotenuse when a = 4cm and b = 10cm. Give your answer to 2 decimal places
Answer: 10.77cm -
4. Ratio Sharing in a ratio
Divide 171 in the ratio 4:3:2
Answer: 76, 57 and 38 -
5. Statistics Mean
Find the mean of: 9, 24, 11, 16
Answer: 15