Keystones — Cornerstone
Five GCSE retrieval questions · 4 May 2014 · mathsvault.uk/keystones
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1. Number Adding fractions
Add: 1⁄3 + 2⁄4
Answer: 5⁄6 -
2. Algebra Two-step equations
Solve: 7x + 11 = 53
Answer: x = 6 -
3. Geometry Pythagoras — hypotenuse
Calculate the hypotenuse when a = 8cm and b = 7cm. Give your answer to 2 decimal places
Answer: 10.63cm -
4. Ratio Sharing in a ratio
Divide 90 in the ratio 2:1:3
Answer: 30, 15 and 45 -
5. Statistics Mean
Find the mean of: 6, 3, 9
Answer: 6