Keystones — Cornerstone
Five GCSE retrieval questions · 27 April 2014 · mathsvault.uk/keystones
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1. Number Adding fractions
Add: 3⁄5 + 5⁄7
Answer: 46⁄35 -
2. Algebra Two-step equations
Solve: 5x - 19 = 56
Answer: x = 15 -
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 30 in the ratio 1:2
Answer: 10 and 20 -
5. Statistics Mean
Calculate the mean of: 39, 16, 45, 41, 7, 29
Answer: 29.5