Keystones — Cornerstone
Five GCSE retrieval questions · 30 June 2011 · mathsvault.uk/keystones
-
1. Number Adding fractions
Calculate: 2⁄8 + 3⁄8
Answer: 5⁄8 -
2. Algebra Two-step equations
Solve: 3x + 3 = 36
Answer: x = 11 -
3. Geometry Pythagoras — hypotenuse
Find the hypotenuse of a right triangle with sides 3cm and 4cm
Answer: 5cm -
4. Ratio Sharing in a ratio
Divide 96 in the ratio 1:3:4
Answer: 12, 36 and 48 -
5. Statistics Mean
Calculate the mean of: 33, 19, 28, 5, 47, 27, 39, 39. Give your answer to 2 decimal places
Answer: 29.63