Keystones — Cornerstone
Five GCSE retrieval questions · 10 June 2014 · mathsvault.uk/keystones
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1. Number Adding fractions
Add: 2⁄7 + 3⁄5
Answer: 31⁄35 -
2. Algebra Two-step equations
Solve: 4x - 11 = 5
Answer: x = 4 -
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
Share 108 in the ratio 2:1
Answer: 72 and 36 -
5. Statistics Mean
Calculate the mean of: 50, 35, 36, 35, 44, 25, 33, 39. Give your answer to 2 decimal places
Answer: 37.13