Keystones — Cornerstone
Five GCSE retrieval questions · 17 February 2016 · mathsvault.uk/keystones
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1. Number Adding fractions
Calculate: 2⁄5 + 2⁄5
Answer: 4⁄5 -
2. Algebra Two-step equations
Solve: 6x + 10 = 46
Answer: x = 6 -
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
Divide 162 in the ratio 2:3:4
Answer: 36, 54 and 72 -
5. Statistics Mean
Find the mean of: 12, 20, 11, 13, 9
Answer: 13