Keystones — Cornerstone
Five GCSE retrieval questions · 6 October 2016 · mathsvault.uk/keystones
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1. Number Adding fractions
Add: 2⁄4 + 5⁄7
Answer: 17⁄14 -
2. Algebra Two-step equations
Solve: 2x - 14 = 8
Answer: x = 11 -
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 36 in the ratio 1:3
Answer: 9 and 27 -
5. Statistics Mean
Calculate the mean of: 33, 6, 28, 41, 44, 26, 47. Give your answer to 2 decimal places
Answer: 32.14