Keystones — Cornerstone
Five GCSE retrieval questions · 8 June 2016 · mathsvault.uk/keystones
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1. Number Adding fractions
Calculate: 4⁄10 + 5⁄10
Answer: 9⁄10 -
2. Algebra Two-step equations
Solve: 3x + 8 = 17
Answer: x = 3 -
3. Geometry Pythagoras — hypotenuse
Find the hypotenuse of a right triangle with sides 12cm and 35cm
Answer: 37cm -
4. Ratio Sharing in a ratio
Divide 200 in the ratio 1:2:2
Answer: 40, 80 and 80 -
5. Statistics Mean
Calculate the mean of: 19, 25, 21, 35, 22, 14, 34. Give your answer to 2 decimal places
Answer: 24.29