Keystones — Cornerstone
Five GCSE retrieval questions · 7 September 2015 · mathsvault.uk/keystones
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1. Number Adding fractions
Calculate: 3⁄8 + 2⁄8
Answer: 5⁄8 -
2. Algebra Two-step equations
Solve: 7x + 6 = 48
Answer: x = 6 -
3. Geometry Pythagoras — hypotenuse
Calculate the hypotenuse when a = 11cm and b = 14cm. Give your answer to 2 decimal places
Answer: 17.8cm -
4. Ratio Sharing in a ratio
Share 96 in the ratio 2:1
Answer: 64 and 32 -
5. Statistics Mean
Find the mean of: 7, 14, 13, 7, 19
Answer: 12