Keystones — Cornerstone
Five GCSE retrieval questions · 4 May 2012 · mathsvault.uk/keystones
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1. Number Adding fractions
Calculate: 2⁄6 + 3⁄6
Answer: 5⁄6 -
2. Algebra Two-step equations
Solve: 8x - 10 = 110
Answer: x = 15 -
3. Geometry Pythagoras — hypotenuse
Calculate the hypotenuse when a = 11cm and b = 11cm. Give your answer to 2 decimal places
Answer: 15.56cm -
4. Ratio Sharing in a ratio
Divide 168 in the ratio 1:4:2
Answer: 24, 96 and 48 -
5. Statistics Mean
Find the mean of: 18, 13, 19, 4, 1
Answer: 11