Keystones — Cornerstone
Five GCSE retrieval questions · 23 July 2015 · mathsvault.uk/keystones
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1. Number Adding fractions
Add: 1⁄7 + 4⁄8
Answer: 9⁄14 -
2. Algebra Two-step equations
Solve: 3x - 15 = 6
Answer: x = 7 -
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 70 in the ratio 3:2
Answer: 42 and 28 -
5. Statistics Mean
Find the mean of: 16, 10, 16
Answer: 14