Keystones — Cornerstone
Five GCSE retrieval questions · 15 April 2012 · mathsvault.uk/keystones
-
1. Number Adding fractions
Calculate: 3⁄6 + 2⁄6
Answer: 5⁄6 -
2. Algebra Two-step equations
Solve: 4x + 13 = 45
Answer: x = 8 -
3. Geometry Pythagoras — hypotenuse
Find the hypotenuse of a right triangle with sides 6cm and 8cm
Answer: 10cm -
4. Ratio Sharing in a ratio
Divide 144 in the ratio 4:1:4
Answer: 64, 16 and 64 -
5. Statistics Mean
Calculate the mean of: 12, 24, 34, 33, 28, 36, 11, 42
Answer: 27.5