Keystones — Cornerstone
Five GCSE retrieval questions · 15 April 2011 · mathsvault.uk/keystones
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1. Number Adding fractions
Add: 2⁄8 + 1⁄7
Answer: 11⁄28 -
2. Algebra Two-step equations
Solve: 4x + 3 = 39
Answer: x = 9 -
3. Geometry Pythagoras — hypotenuse
Calculate the hypotenuse when a = 3cm and b = 11cm. Give your answer to 2 decimal places
Answer: 11.4cm -
4. Ratio Sharing in a ratio
Share 66 in the ratio 2:1
Answer: 44 and 22 -
5. Statistics Mean
Find the mean of: 4, 3, 8, 13, 2
Answer: 6