Keystones — Cornerstone
Five GCSE retrieval questions · 14 August 2012 · mathsvault.uk/keystones
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1. Number Adding fractions
Calculate: 4⁄9 + 2⁄9
Answer: 2⁄3 -
2. Algebra Two-step equations
Solve: 4x - 9 = 35
Answer: x = 11 -
3. Geometry Pythagoras — hypotenuse
Find the hypotenuse of a right triangle with sides 15cm and 36cm
Answer: 39cm -
4. Ratio Sharing in a ratio
Share 90 in the ratio 3:2
Answer: 54 and 36 -
5. Statistics Mean
Find the mean of: 7, 1, 16
Answer: 8