Keystones — Cornerstone
Five GCSE retrieval questions · 16 August 2014 · mathsvault.uk/keystones
-
1. Number Adding fractions
Add: 5⁄7 + 4⁄8
Answer: 17⁄14 -
2. Algebra Two-step equations
Solve: 6x - 12 = 66
Answer: x = 13 -
3. Geometry Pythagoras — hypotenuse
Find the hypotenuse of a right triangle with sides 8cm and 15cm
Answer: 17cm -
4. Ratio Sharing in a ratio
Share 36 in the ratio 2:1
Answer: 24 and 12 -
5. Statistics Mean
Calculate the mean of: 17, 5, 43, 23, 7, 17. Give your answer to 2 decimal places
Answer: 18.67