Keystones — Cornerstone
Five GCSE retrieval questions · 22 March 2016 · mathsvault.uk/keystones
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1. Number Adding fractions
Calculate: 4⁄8 + 3⁄8
Answer: 7⁄8 -
2. Algebra Two-step equations
Solve: 5x - 9 = 26
Answer: x = 7 -
3. Geometry Pythagoras — hypotenuse
Calculate the hypotenuse when a = 4cm and b = 6cm. Give your answer to 2 decimal places
Answer: 7.21cm -
4. Ratio Sharing in a ratio
Share 55 in the ratio 4:1
Answer: 44 and 11 -
5. Statistics Mean
Calculate the mean of: 25, 34, 13, 15, 32, 43, 42. Give your answer to 2 decimal places
Answer: 29.14