Keystones — Cornerstone
Five GCSE retrieval questions · 5 May 2016 · mathsvault.uk/keystones
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1. Number Adding fractions
Calculate: 5⁄9 + 3⁄9
Answer: 8⁄9 -
2. Algebra Two-step equations
Solve: 6x - 8 = 40
Answer: x = 8 -
3. Geometry Pythagoras — hypotenuse
Calculate the hypotenuse when a = 9cm and b = 11cm. Give your answer to 2 decimal places
Answer: 14.21cm -
4. Ratio Sharing in a ratio
Share 48 in the ratio 3:1
Answer: 36 and 12 -
5. Statistics Mean
Find the mean of: 11, 6, 19, 4
Answer: 10