Keystones — Cornerstone
Five GCSE retrieval questions · 28 September 2016 · mathsvault.uk/keystones
-
1. Number Adding fractions
Calculate: 6⁄8 + 1⁄8
Answer: 7⁄8 -
2. Algebra Two-step equations
Solve: 5x + 5 = 30
Answer: x = 5 -
3. Geometry Pythagoras — hypotenuse
Find the hypotenuse of a right triangle with sides 8cm and 15cm
Answer: 17cm -
4. Ratio Sharing in a ratio
Divide 112 in the ratio 1:1:2
Answer: 28, 28 and 56 -
5. Statistics Mean
Find the mean of: 13, 3, 14
Answer: 10