Keystones — Cornerstone
Five GCSE retrieval questions · 22 May 2010 · mathsvault.uk/keystones
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1. Number Adding fractions
Calculate: 4⁄10 + 4⁄10
Answer: 4⁄5 -
2. Algebra Two-step equations
Solve: 4x + 14 = 26
Answer: x = 3 -
3. Geometry Pythagoras — hypotenuse
Calculate the hypotenuse when a = 9cm and b = 14cm. Give your answer to 2 decimal places
Answer: 16.64cm -
4. Ratio Sharing in a ratio
Divide 152 in the ratio 3:4:1
Answer: 57, 76 and 19 -
5. Statistics Mean
Find the mean of: 11, 6, 6, 9
Answer: 8