Keystones — Cornerstone
Five GCSE retrieval questions · 9 December 2011 · mathsvault.uk/keystones
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1. Number Adding fractions
Add: 2⁄3 + 4⁄5
Answer: 22⁄15 -
2. Algebra Two-step equations
Solve: 4x - 19 = 29
Answer: x = 12 -
3. Geometry Pythagoras — hypotenuse
Calculate the hypotenuse when a = 8cm and b = 11cm. Give your answer to 2 decimal places
Answer: 13.6cm -
4. Ratio Sharing in a ratio
Share 32 in the ratio 3:1
Answer: 24 and 8 -
5. Statistics Mean
Calculate the mean of: 27, 46, 18, 44, 33, 22, 46, 41. Give your answer to 2 decimal places
Answer: 34.63