Keystones — Cornerstone
Five GCSE retrieval questions · 30 November 2013 · mathsvault.uk/keystones
-
1. Number Adding fractions
Calculate: 6⁄9 + 1⁄9
Answer: 7⁄9 -
2. Algebra Two-step equations
Solve: 5x - 19 = 36
Answer: x = 11 -
3. Geometry Pythagoras — hypotenuse
Find the hypotenuse of a right triangle with sides 7cm and 24cm
Answer: 25cm -
4. Ratio Sharing in a ratio
Share 27 in the ratio 2:1
Answer: 18 and 9 -
5. Statistics Mean
Calculate the mean of: 18, 30, 36, 32, 22, 14. Give your answer to 2 decimal places
Answer: 25.33