Keystones — Cornerstone
Five GCSE retrieval questions · 4 June 2017 · mathsvault.uk/keystones
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1. Number Adding fractions
Calculate: 2⁄11 + 7⁄11
Answer: 9⁄11 -
2. Algebra Two-step equations
Solve: 4x + 14 = 46
Answer: x = 8 -
3. Geometry Pythagoras — hypotenuse
Calculate the hypotenuse when a = 9cm and b = 6cm. Give your answer to 2 decimal places
Answer: 10.82cm -
4. Ratio Sharing in a ratio
Divide 203 in the ratio 4:1:2
Answer: 116, 29 and 58 -
5. Statistics Mean
Calculate the mean of: 11, 37, 42, 26, 30, 20, 33. Give your answer to 2 decimal places
Answer: 28.43