Keystones — Cornerstone
Five GCSE retrieval questions · 28 April 2014 · mathsvault.uk/keystones
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1. Number Adding fractions
Add: 1⁄5 + 1⁄4
Answer: 9⁄20 -
2. Algebra Two-step equations
Solve: 4x - 10 = 34
Answer: x = 11 -
3. Geometry Pythagoras — hypotenuse
Find the hypotenuse of a right triangle with sides 7cm and 24cm
Answer: 25cm -
4. Ratio Sharing in a ratio
Share 35 in the ratio 4:3
Answer: 20 and 15 -
5. Statistics Mean
Calculate the mean of: 5, 47, 41, 30, 47, 8, 33. Give your answer to 2 decimal places
Answer: 30.14