Keystones — Cornerstone
Five GCSE retrieval questions · 22 May 2012 · mathsvault.uk/keystones
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1. Number Adding fractions
Calculate: 2⁄9 + 2⁄9
Answer: 4⁄9 -
2. Algebra Two-step equations
Solve: 7x + 3 = 45
Answer: x = 6 -
3. Geometry Pythagoras — hypotenuse
Find the hypotenuse of a right triangle with sides 3cm and 4cm
Answer: 5cm -
4. Ratio Sharing in a ratio
Share 54 in the ratio 2:1
Answer: 36 and 18 -
5. Statistics Mean
Calculate the mean of: 12, 30, 45, 15, 24, 36, 44. Give your answer to 2 decimal places
Answer: 29.43