Keystones — Cornerstone
Five GCSE retrieval questions · 9 January 2014 · mathsvault.uk/keystones
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1. Number Adding fractions
Calculate: 1⁄11 + 5⁄11
Answer: 6⁄11 -
2. Algebra Two-step equations
Solve: 2x + 12 = 20
Answer: x = 4 -
3. Geometry Pythagoras — hypotenuse
Find the hypotenuse of a right triangle with sides 9cm and 40cm
Answer: 41cm -
4. Ratio Sharing in a ratio
Share 27 in the ratio 2:1
Answer: 18 and 9 -
5. Statistics Mean
Find the mean of: 2, 5, 14, 15
Answer: 9