Keystones — Cornerstone
Five GCSE retrieval questions · 26 February 2016 · mathsvault.uk/keystones
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1. Number Adding fractions
Add: 1⁄7 + 1⁄4
Answer: 11⁄28 -
2. Algebra Two-step equations
Solve: 7x + 3 = 52
Answer: x = 7 -
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 35 in the ratio 2:3
Answer: 14 and 21 -
5. Statistics Mean
Find the mean of: 13, 12, 18, 2, 15
Answer: 12