Keystones — Cornerstone
Five GCSE retrieval questions · 7 March 2016 · mathsvault.uk/keystones
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1. Number Adding fractions
Add: 3⁄6 + 2⁄3
Answer: 7⁄6 -
2. Algebra Two-step equations
Solve: 6x + 13 = 73
Answer: x = 10 -
3. Geometry Pythagoras — hypotenuse
Calculate the hypotenuse when a = 7cm and b = 14cm. Give your answer to 2 decimal places
Answer: 15.65cm -
4. Ratio Sharing in a ratio
Divide 65 in the ratio 1:2:2
Answer: 13, 26 and 26 -
5. Statistics Mean
Find the mean of: 6, 4, 18, 16
Answer: 11