Keystones — Cornerstone
Five GCSE retrieval questions · 9 October 2013 · mathsvault.uk/keystones
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1. Number Adding fractions
Add: 5⁄6 + 3⁄4
Answer: 19⁄12 -
2. Algebra Two-step equations
Solve: 4x + 10 = 58
Answer: x = 12 -
3. Geometry Pythagoras — hypotenuse
Calculate the hypotenuse when a = 6cm and b = 6cm. Give your answer to 2 decimal places
Answer: 8.49cm -
4. Ratio Sharing in a ratio
Divide 154 in the ratio 3:2:2
Answer: 66, 44 and 44 -
5. Statistics Mean
Find the mean of: 16, 7, 16
Answer: 13