Keystones — Cornerstone
Five GCSE retrieval questions · 14 June 2013 · mathsvault.uk/keystones
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1. Number Adding fractions
Calculate: 1⁄8 + 1⁄8
Answer: 1⁄4 -
2. Algebra Two-step equations
Solve: 4x + 11 = 47
Answer: x = 9 -
3. Geometry Pythagoras — hypotenuse
Find the hypotenuse of a right triangle with sides 15cm and 20cm
Answer: 25cm -
4. Ratio Sharing in a ratio
Divide 187 in the ratio 3:4:4
Answer: 51, 68 and 68 -
5. Statistics Mean
Find the mean of: 22, 8, 3, 11
Answer: 11