Keystones — Cornerstone
Five GCSE retrieval questions · 12 January 2018 · mathsvault.uk/keystones
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1. Number Adding fractions
Calculate: 3⁄5 + 1⁄5
Answer: 4⁄5 -
2. Algebra Two-step equations
Solve: 7x - 6 = 71
Answer: x = 11 -
3. Geometry Pythagoras — hypotenuse
Calculate the hypotenuse when a = 7cm and b = 5cm. Give your answer to 2 decimal places
Answer: 8.6cm -
4. Ratio Sharing in a ratio
Divide 135 in the ratio 2:3:4
Answer: 30, 45 and 60 -
5. Statistics Mean
Find the mean of: 8, 14, 12, 4, 2
Answer: 8