Keystones — Cornerstone
Five GCSE retrieval questions · 1 April 2016 · mathsvault.uk/keystones
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1. Number Adding fractions
Add: 6⁄8 + 1⁄5
Answer: 19⁄20 -
2. Algebra Two-step equations
Solve: 6x + 7 = 61
Answer: x = 9 -
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 45 in the ratio 3:2
Answer: 27 and 18 -
5. Statistics Mean
Calculate the mean of: 43, 14, 43, 25, 43, 8, 39. Give your answer to 2 decimal places
Answer: 30.71