Keystones — Cornerstone
Five GCSE retrieval questions · 9 December 2017 · mathsvault.uk/keystones
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1. Number Adding fractions
Calculate: 4⁄11 + 5⁄11
Answer: 9⁄11 -
2. Algebra Two-step equations
Solve: 6x + 4 = 40
Answer: x = 6 -
3. Geometry Pythagoras — hypotenuse
Calculate the hypotenuse when a = 5cm and b = 6cm. Give your answer to 2 decimal places
Answer: 7.81cm -
4. Ratio Sharing in a ratio
Share 96 in the ratio 2:1
Answer: 64 and 32 -
5. Statistics Mean
Calculate the mean of: 39, 8, 35, 47, 11, 6. Give your answer to 2 decimal places
Answer: 24.33