Keystones — Cornerstone
Five GCSE retrieval questions · 27 June 2016 · mathsvault.uk/keystones
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1. Number Adding fractions
Add: 3⁄7 + 4⁄5
Answer: 43⁄35 -
2. Algebra Two-step equations
Solve: 3x + 13 = 34
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
Divide 120 in the ratio 2:2:1
Answer: 48, 48 and 24 -
5. Statistics Mean
Find the mean of: 6, 24, 3
Answer: 11