Keystones — Cornerstone
Five GCSE retrieval questions · 24 June 2016 · mathsvault.uk/keystones
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1. Number Adding fractions
Calculate: 6⁄8 + 1⁄8
Answer: 7⁄8 -
2. Algebra Two-step equations
Solve: 2x + 6 = 12
Answer: x = 3 -
3. Geometry Pythagoras — hypotenuse
Calculate the hypotenuse when a = 10cm and b = 9cm. Give your answer to 2 decimal places
Answer: 13.45cm -
4. Ratio Sharing in a ratio
Divide 175 in the ratio 3:2:2
Answer: 75, 50 and 50 -
5. Statistics Mean
Find the mean of: 5, 9, 16
Answer: 10