Keystones — Cornerstone
Five GCSE retrieval questions · 24 January 2014 · mathsvault.uk/keystones
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1. Number Adding fractions
Add: 2⁄5 + 1⁄3
Answer: 11⁄15 -
2. Algebra Two-step equations
Solve: 8x - 9 = 87
Answer: x = 12 -
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 140 in the ratio 4:3
Answer: 80 and 60 -
5. Statistics Mean
Find the mean of: 13, 9, 11, 19
Answer: 13