Keystones — Cornerstone
Five GCSE retrieval questions · 3 March 2016 · mathsvault.uk/keystones
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1. Number Adding fractions
Calculate: 3⁄6 + 2⁄6
Answer: 5⁄6 -
2. Algebra Two-step equations
Solve: 6x + 13 = 85
Answer: x = 12 -
3. Geometry Pythagoras — hypotenuse
Find the hypotenuse of a right triangle with sides 6cm and 8cm
Answer: 10cm -
4. Ratio Sharing in a ratio
Share 36 in the ratio 2:1
Answer: 24 and 12 -
5. Statistics Mean
Calculate the mean of: 9, 49, 22, 12, 34, 23, 27, 41. Give your answer to 2 decimal places
Answer: 27.13