Keystones — Cornerstone
Five GCSE retrieval questions · 4 November 2010 · mathsvault.uk/keystones
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1. Number Adding fractions
Calculate: 2⁄8 + 3⁄8
Answer: 5⁄8 -
2. Algebra Two-step equations
Solve: 5x + 11 = 46
Answer: x = 7 -
3. Geometry Pythagoras — hypotenuse
Find the hypotenuse of a right triangle with sides 7cm and 24cm
Answer: 25cm -
4. Ratio Sharing in a ratio
Divide 184 in the ratio 1:1:2
Answer: 46, 46 and 92 -
5. Statistics Mean
Find the mean of: 8, 20, 14, 17, 16
Answer: 15