Keystones — Cornerstone
Five GCSE retrieval questions · 1 June 2013 · mathsvault.uk/keystones
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1. Number Adding fractions
Add: 4⁄8 + 4⁄7
Answer: 15⁄14 -
2. Algebra Two-step equations
Solve: 6x + 7 = 37
Answer: x = 5 -
3. Geometry Pythagoras — hypotenuse
Find the hypotenuse of a right triangle with sides 15cm and 36cm
Answer: 39cm -
4. Ratio Sharing in a ratio
Divide 88 in the ratio 2:3:3
Answer: 22, 33 and 33 -
5. Statistics Mean
Find the mean of: 11, 17, 13, 9, 5
Answer: 11