Keystones — Cornerstone
Five GCSE retrieval questions · 19 December 2016 · mathsvault.uk/keystones
-
1. Number Adding fractions
Calculate: 6⁄8 + 1⁄8
Answer: 7⁄8 -
2. Algebra Two-step equations
Solve: 8x - 19 = 13
Answer: x = 4 -
3. Geometry Pythagoras — hypotenuse
Calculate the hypotenuse when a = 5cm and b = 12cm
Answer: 13cm -
4. Ratio Sharing in a ratio
Divide 119 in the ratio 3:1:3
Answer: 51, 17 and 51 -
5. Statistics Mean
Calculate the mean of: 5, 16, 19, 17, 45, 32. Give your answer to 2 decimal places
Answer: 22.33