Keystones — Cornerstone
Five GCSE retrieval questions · 15 February 2015 · mathsvault.uk/keystones
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1. Number Adding fractions
Add: 2⁄4 + 3⁄5
Answer: 11⁄10 -
2. Algebra Two-step equations
Solve: 6x - 5 = 79
Answer: x = 14 -
3. Geometry Pythagoras — hypotenuse
Find the hypotenuse of a right triangle with sides 7cm and 24cm
Answer: 25cm -
4. Ratio Sharing in a ratio
Share 45 in the ratio 4:1
Answer: 36 and 9 -
5. Statistics Mean
Find the mean of: 15, 10, 17
Answer: 14