Keystones — Cornerstone
Five GCSE retrieval questions · 29 August 2013 · mathsvault.uk/keystones
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1. Number Adding fractions
Add: 4⁄6 + 3⁄7
Answer: 23⁄21 -
2. Algebra Two-step equations
Solve: 5x - 18 = 17
Answer: x = 7 -
3. Geometry Pythagoras — hypotenuse
Find the hypotenuse of a right triangle with sides 12cm and 35cm
Answer: 37cm -
4. Ratio Sharing in a ratio
Divide 231 in the ratio 4:3:4
Answer: 84, 63 and 84 -
5. Statistics Mean
Find the mean of: 5, 8, 2
Answer: 5