Keystones — Cornerstone
Five GCSE retrieval questions · 13 June 2014 · mathsvault.uk/keystones
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1. Number Adding fractions
Calculate: 1⁄6 + 2⁄6
Answer: 1⁄2 -
2. Algebra Two-step equations
Solve: 8x - 8 = 96
Answer: x = 13 -
3. Geometry Pythagoras — hypotenuse
Find the hypotenuse of a right triangle with sides 9cm and 12cm
Answer: 15cm -
4. Ratio Sharing in a ratio
Share 98 in the ratio 3:4
Answer: 42 and 56 -
5. Statistics Mean
Calculate the mean of: 21, 21, 9, 33, 25, 50
Answer: 26.5