Keystones — Cornerstone
Five GCSE retrieval questions · 15 September 2016 · mathsvault.uk/keystones
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1. Number Adding fractions
Calculate: 3⁄6 + 1⁄6
Answer: 2⁄3 -
2. Algebra Two-step equations
Solve: 5x + 15 = 65
Answer: x = 10 -
3. Geometry Pythagoras — hypotenuse
Find the hypotenuse of a right triangle with sides 9cm and 12cm
Answer: 15cm -
4. Ratio Sharing in a ratio
Share 60 in the ratio 1:3
Answer: 15 and 45 -
5. Statistics Mean
Find the mean of: 5, 7, 16, 4
Answer: 8