Keystones — Cornerstone
Five GCSE retrieval questions · 24 January 2012 · mathsvault.uk/keystones
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1. Number Adding fractions
Calculate: 2⁄7 + 3⁄7
Answer: 5⁄7 -
2. Algebra Two-step equations
Solve: 7x + 4 = 46
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 27 in the ratio 1:2
Answer: 9 and 18 -
5. Statistics Mean
Find the mean of: 20, 14, 2
Answer: 12