Keystones — Cornerstone
Five GCSE retrieval questions · 8 March 2011 · mathsvault.uk/keystones
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1. Number Adding fractions
Add: 3⁄8 + 1⁄4
Answer: 5⁄8 -
2. Algebra Two-step equations
Solve: 4x - 12 = 32
Answer: x = 11 -
3. Geometry Pythagoras — hypotenuse
Calculate the hypotenuse when a = 6cm and b = 10cm. Give your answer to 2 decimal places
Answer: 11.66cm -
4. Ratio Sharing in a ratio
Divide 220 in the ratio 4:3:4
Answer: 80, 60 and 80 -
5. Statistics Mean
Find the mean of: 13, 9, 14
Answer: 12