Keystones — Cornerstone
Five GCSE retrieval questions · 29 October 2016 · mathsvault.uk/keystones
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1. Number Adding fractions
Calculate: 3⁄5 + 1⁄5
Answer: 4⁄5 -
2. Algebra Two-step equations
Solve: 6x - 15 = 69
Answer: x = 14 -
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 72 in the ratio 2:1
Answer: 48 and 24 -
5. Statistics Mean
Find the mean of: 10, 19, 20, 7
Answer: 14