Keystones — Cornerstone
Five GCSE retrieval questions · 24 March 2013 · mathsvault.uk/keystones
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1. Number Adding fractions
Add: 2⁄8 + 3⁄5
Answer: 17⁄20 -
2. Algebra Two-step equations
Solve: 2x - 5 = 15
Answer: x = 10 -
3. Geometry Pythagoras — hypotenuse
Calculate the hypotenuse when a = 9cm and b = 11cm. Give your answer to 2 decimal places
Answer: 14.21cm -
4. Ratio Sharing in a ratio
Share 100 in the ratio 2:3
Answer: 40 and 60 -
5. Statistics Mean
Find the mean of: 3, 23, 13
Answer: 13