Keystones — Cornerstone
Five GCSE retrieval questions · 22 December 2013 · mathsvault.uk/keystones
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1. Number Adding fractions
Add: 2⁄7 + 1⁄5
Answer: 17⁄35 -
2. Algebra Two-step equations
Solve: 8x - 13 = 35
Answer: x = 6 -
3. Geometry Pythagoras — hypotenuse
Calculate the hypotenuse when a = 3cm and b = 8cm. Give your answer to 2 decimal places
Answer: 8.54cm -
4. Ratio Sharing in a ratio
Share 21 in the ratio 2:1
Answer: 14 and 7 -
5. Statistics Mean
Find the mean of: 16, 15, 6, 23
Answer: 15