Keystones — Cornerstone
Five GCSE retrieval questions · 31 May 2010 · mathsvault.uk/keystones
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1. Number Adding fractions
Calculate: 3⁄5 + 1⁄5
Answer: 4⁄5 -
2. Algebra Two-step equations
Solve: 6x - 10 = 44
Answer: x = 9 -
3. Geometry Pythagoras — hypotenuse
Find the hypotenuse of a right triangle with sides 9cm and 12cm
Answer: 15cm -
4. Ratio Sharing in a ratio
Share 24 in the ratio 1:2
Answer: 8 and 16 -
5. Statistics Mean
Find the mean of: 12, 25, 5
Answer: 14