Keystones — Cornerstone
Five GCSE retrieval questions · 23 July 2012 · mathsvault.uk/keystones
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1. Number Adding fractions
Add: 4⁄7 + 5⁄8
Answer: 67⁄56 -
2. Algebra Two-step equations
Solve: 3x + 7 = 25
Answer: x = 6 -
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 133 in the ratio 4:3
Answer: 76 and 57 -
5. Statistics Mean
Find the mean of: 18, 3, 6
Answer: 9