Keystones — Cornerstone
Five GCSE retrieval questions · 1 April 2013 · mathsvault.uk/keystones
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1. Number Adding fractions
Add: 5⁄6 + 2⁄4
Answer: 4⁄3 -
2. Algebra Two-step equations
Solve: 3x - 14 = 19
Answer: x = 11 -
3. Geometry Pythagoras — hypotenuse
Calculate the hypotenuse when a = 7cm and b = 15cm. Give your answer to 2 decimal places
Answer: 16.55cm -
4. Ratio Sharing in a ratio
Divide 44 in the ratio 1:1:2
Answer: 11, 11 and 22 -
5. Statistics Mean
Find the mean of: 16, 3, 20
Answer: 13