Keystones — Cornerstone
Five GCSE retrieval questions · 29 June 2014 · 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: 5x - 19 = 21
Answer: x = 8 -
3. Geometry Pythagoras — hypotenuse
Find the hypotenuse of a right triangle with sides 6cm and 8cm
Answer: 10cm -
4. Ratio Sharing in a ratio
Share 77 in the ratio 3:4
Answer: 33 and 44 -
5. Statistics Mean
Find the mean of: 9, 5, 19, 19
Answer: 13