Keystones — Cornerstone
Five GCSE retrieval questions · 5 April 2016 · mathsvault.uk/keystones
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1. Number Adding fractions
Calculate: 8⁄12 + 2⁄12
Answer: 5⁄6 -
2. Algebra Two-step equations
Solve: 6x + 6 = 30
Answer: x = 4 -
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 132 in the ratio 3:4:4
Answer: 36, 48 and 48 -
5. Statistics Mean
Find the mean of: 19, 11, 17, 13
Answer: 15