Keystones — Cornerstone
Five GCSE retrieval questions · 1 July 2014 · mathsvault.uk/keystones
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1. Number Adding fractions
Add: 1⁄4 + 5⁄7
Answer: 27⁄28 -
2. Algebra Two-step equations
Solve: 3x + 7 = 16
Answer: x = 3 -
3. Geometry Pythagoras — hypotenuse
Find the hypotenuse of a right triangle with sides 5cm and 12cm
Answer: 13cm -
4. Ratio Sharing in a ratio
Share 105 in the ratio 3:4
Answer: 45 and 60 -
5. Statistics Mean
Find the mean of: 24, 17, 8, 11
Answer: 15