Keystones — Cornerstone
Five GCSE retrieval questions · 3 July 2014 · mathsvault.uk/keystones
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1. Number Adding fractions
Add: 4⁄5 + 2⁄7
Answer: 38⁄35 -
2. Algebra Two-step equations
Solve: 4x - 16 = 0
Answer: x = 4 -
3. Geometry Pythagoras — hypotenuse
Find the hypotenuse of a right triangle with sides 12cm and 35cm
Answer: 37cm -
4. Ratio Sharing in a ratio
Share 18 in the ratio 2:1
Answer: 12 and 6 -
5. Statistics Mean
Calculate the mean of: 10, 10, 49, 35, 9, 48, 14, 21
Answer: 24.5