Keystones — Cornerstone
Five GCSE retrieval questions · 2 September 2013 · mathsvault.uk/keystones
-
1. Number Adding fractions
Add: 4⁄5 + 2⁄6
Answer: 17⁄15 -
2. Algebra Two-step equations
Solve: 5x + 11 = 56
Answer: x = 9 -
3. Geometry Pythagoras — hypotenuse
Calculate the hypotenuse when a = 8cm and b = 12cm. Give your answer to 2 decimal places
Answer: 14.42cm -
4. Ratio Sharing in a ratio
Divide 136 in the ratio 2:1:1
Answer: 68, 34 and 34 -
5. Statistics Mean
Find the mean of: 13, 9, 17
Answer: 13