Keystones — Cornerstone
Five GCSE retrieval questions · 22 October 2014 · mathsvault.uk/keystones
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1. Number Adding fractions
Add: 2⁄7 + 1⁄8
Answer: 23⁄56 -
2. Algebra Two-step equations
Solve: 3x - 12 = 6
Answer: x = 6 -
3. Geometry Pythagoras — hypotenuse
Find the hypotenuse of a right triangle with sides 6cm and 8cm
Answer: 10cm -
4. Ratio Sharing in a ratio
Share 55 in the ratio 1:4
Answer: 11 and 44 -
5. Statistics Mean
Find the mean of: 10, 4, 20, 14
Answer: 12