Keystones — Cornerstone
Five GCSE retrieval questions · 19 July 2015 · mathsvault.uk/keystones
-
1. Number Adding fractions
Add: 3⁄5 + 3⁄6
Answer: 11⁄10 -
2. Algebra Two-step equations
Solve: 5x - 19 = 41
Answer: x = 12 -
3. Geometry Pythagoras — hypotenuse
Find the hypotenuse of a right triangle with sides 9cm and 12cm
Answer: 15cm -
4. Ratio Sharing in a ratio
Share 54 in the ratio 2:1
Answer: 36 and 18 -
5. Statistics Mean
Calculate the mean of: 31, 11, 21, 47, 32, 13. Give your answer to 2 decimal places
Answer: 25.83