Keystones — Cornerstone
Five GCSE retrieval questions · 24 December 2014 · mathsvault.uk/keystones
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1. Number Adding fractions
Calculate: 4⁄7 + 1⁄7
Answer: 5⁄7 -
2. Algebra Two-step equations
Solve: 2x - 6 = 16
Answer: x = 11 -
3. Geometry Pythagoras — hypotenuse
Find the hypotenuse of a right triangle with sides 8cm and 15cm
Answer: 17cm -
4. Ratio Sharing in a ratio
Divide 92 in the ratio 1:2:1
Answer: 23, 46 and 23 -
5. Statistics Mean
Find the mean of: 14, 15, 17, 19, 10
Answer: 15