Keystones — Cornerstone
Five GCSE retrieval questions · 7 April 2015 · mathsvault.uk/keystones
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1. Number Adding fractions
Add: 7⁄8 + 6⁄7
Answer: 97⁄56 -
2. Algebra Two-step equations
Solve: 3x - 10 = 23
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
Share 112 in the ratio 4:3
Answer: 64 and 48 -
5. Statistics Mean
Find the mean of: 5, 13, 18
Answer: 12