Keystones — Cornerstone
Five GCSE retrieval questions · 20 May 2016 · mathsvault.uk/keystones
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1. Number Adding fractions
Add: 3⁄4 + 4⁄6
Answer: 17⁄12 -
2. Algebra Two-step equations
Solve: 2x + 12 = 26
Answer: x = 7 -
3. Geometry Pythagoras — hypotenuse
Calculate the hypotenuse when a = 6cm and b = 13cm. Give your answer to 2 decimal places
Answer: 14.32cm -
4. Ratio Sharing in a ratio
Divide 133 in the ratio 1:2:4
Answer: 19, 38 and 76 -
5. Statistics Mean
Calculate the mean of: 24, 12, 28, 7, 37, 44. Give your answer to 2 decimal places
Answer: 25.33