Keystones — Cornerstone
Five GCSE retrieval questions · 2 January 2014 · mathsvault.uk/keystones
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1. Number Adding fractions
Add: 6⁄8 + 1⁄3
Answer: 13⁄12 -
2. Algebra Two-step equations
Solve: 5x + 4 = 44
Answer: x = 8 -
3. Geometry Pythagoras — hypotenuse
Calculate the hypotenuse when a = 10cm and b = 8cm. Give your answer to 2 decimal places
Answer: 12.81cm -
4. Ratio Sharing in a ratio
Divide 180 in the ratio 4:3:3
Answer: 72, 54 and 54 -
5. Statistics Mean
Calculate the mean of: 36, 16, 8, 35, 31, 10, 5, 39
Answer: 22.5