Keystones — Cornerstone
Five GCSE retrieval questions · 15 February 2014 · mathsvault.uk/keystones
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1. Number Adding fractions
Calculate: 2⁄5 + 1⁄5
Answer: 3⁄5 -
2. Algebra Two-step equations
Solve: 8x - 20 = 92
Answer: x = 14 -
3. Geometry Pythagoras — hypotenuse
Find the hypotenuse of a right triangle with sides 15cm and 36cm
Answer: 39cm -
4. Ratio Sharing in a ratio
Share 30 in the ratio 3:2
Answer: 18 and 12 -
5. Statistics Mean
Find the mean of: 8, 6, 16
Answer: 10