Keystones — Cornerstone
Five GCSE retrieval questions · 13 June 2017 · mathsvault.uk/keystones
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1. Number Adding fractions
Add: 3⁄8 + 3⁄4
Answer: 9⁄8 -
2. Algebra Two-step equations
Solve: 2x - 17 = -1
Answer: x = 8 -
3. Geometry Pythagoras — hypotenuse
Calculate the hypotenuse when a = 5cm and b = 15cm. Give your answer to 2 decimal places
Answer: 15.81cm -
4. Ratio Sharing in a ratio
Divide 88 in the ratio 1:2:1
Answer: 22, 44 and 22 -
5. Statistics Mean
Find the mean of: 17, 10, 15
Answer: 14