Keystones — Cornerstone
Five GCSE retrieval questions · 10 November 2013 · mathsvault.uk/keystones
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1. Number Adding fractions
Add: 3⁄7 + 3⁄4
Answer: 33⁄28 -
2. Algebra Two-step equations
Solve: 8x - 14 = 66
Answer: x = 10 -
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 60 in the ratio 1:2
Answer: 20 and 40 -
5. Statistics Mean
Find the mean of: 6, 14, 21, 3
Answer: 11