Keystones — Cornerstone
Five GCSE retrieval questions · 2 June 2012 · mathsvault.uk/keystones
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1. Number Adding fractions
Add: 1⁄4 + 3⁄7
Answer: 19⁄28 -
2. Algebra Two-step equations
Solve: 3x + 4 = 16
Answer: x = 4 -
3. Geometry Pythagoras — hypotenuse
Calculate the hypotenuse when a = 9cm and b = 13cm. Give your answer to 2 decimal places
Answer: 15.81cm -
4. Ratio Sharing in a ratio
Divide 140 in the ratio 2:1:2
Answer: 56, 28 and 56 -
5. Statistics Mean
Find the mean of: 22, 2, 18, 5, 8
Answer: 11