Keystones — Cornerstone
Five GCSE retrieval questions · 16 July 2014 · mathsvault.uk/keystones
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1. Number Adding fractions
Calculate: 6⁄10 + 1⁄10
Answer: 7⁄10 -
2. Algebra Two-step equations
Solve: 5x - 14 = 11
Answer: x = 5 -
3. Geometry Pythagoras — hypotenuse
Find the hypotenuse of a right triangle with sides 15cm and 36cm
Answer: 39cm -
4. Ratio Sharing in a ratio
Share 48 in the ratio 1:2
Answer: 16 and 32 -
5. Statistics Mean
Calculate the mean of: 21, 14, 34, 14, 14, 16. Give your answer to 2 decimal places
Answer: 18.83