Keystones — Cornerstone
Five GCSE retrieval questions · 15 September 2011 · mathsvault.uk/keystones
-
1. Number Adding fractions
Calculate: 1⁄5 + 2⁄5
Answer: 3⁄5 -
2. Algebra Two-step equations
Solve: 5x - 17 = 3
Answer: x = 4 -
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 36 in the ratio 1:2
Answer: 12 and 24 -
5. Statistics Mean
Find the mean of: 14, 2, 8
Answer: 8