Keystones — Cornerstone
Five GCSE retrieval questions · 8 September 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: 4x + 4 = 52
Answer: x = 12 -
3. Geometry Pythagoras — hypotenuse
Calculate the hypotenuse when a = 12cm and b = 6cm. Give your answer to 2 decimal places
Answer: 13.42cm -
4. Ratio Sharing in a ratio
Divide 104 in the ratio 3:1:4
Answer: 39, 13 and 52 -
5. Statistics Mean
Calculate the mean of: 35, 17, 14, 14, 40, 37, 50. Give your answer to 2 decimal places
Answer: 29.57