Keystones — Cornerstone
Five GCSE retrieval questions · 2 June 2013 · mathsvault.uk/keystones
-
1. Number Adding fractions
Calculate: 2⁄7 + 4⁄7
Answer: 6⁄7 -
2. Algebra Two-step equations
Solve: 2x + 4 = 14
Answer: x = 5 -
3. Geometry Pythagoras — hypotenuse
Calculate the hypotenuse when a = 4cm and b = 15cm. Give your answer to 2 decimal places
Answer: 15.52cm -
4. Ratio Sharing in a ratio
Divide 253 in the ratio 3:4:4
Answer: 69, 92 and 92 -
5. Statistics Mean
Find the mean of: 9, 8, 7
Answer: 8