Keystones — Cornerstone
Five GCSE retrieval questions · 14 March 2011 · mathsvault.uk/keystones
-
1. Number Adding fractions
Add: 3⁄6 + 5⁄8
Answer: 9⁄8 -
2. Algebra Two-step equations
Solve: 4x + 13 = 49
Answer: x = 9 -
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 50 in the ratio 1:4
Answer: 10 and 40 -
5. Statistics Mean
Find the mean of: 13, 8, 18
Answer: 13