Keystones — Cornerstone
Five GCSE retrieval questions · 18 September 2018 · mathsvault.uk/keystones
-
1. Number Adding fractions
Calculate: 2⁄9 + 2⁄9
Answer: 4⁄9 -
2. Algebra Two-step equations
Solve: 8x - 19 = 53
Answer: x = 9 -
3. Geometry Pythagoras — hypotenuse
Calculate the hypotenuse when a = 4cm and b = 8cm
Answer: 8.94cm -
4. Ratio Sharing in a ratio
Share 28 in the ratio 1:3
Answer: 7 and 21 -
5. Statistics Mean
Calculate the mean of: 10, 8, 11, 29, 23, 14, 7, 43
Answer: 18.1