Keystones — Cornerstone
Five GCSE retrieval questions · 6 January 2018 · mathsvault.uk/keystones
-
1. Number Adding fractions
Calculate: 4⁄6 + 1⁄6
Answer: 5⁄6 -
2. Algebra Two-step equations
Solve: 5x + 7 = 57
Answer: x = 10 -
3. Geometry Pythagoras — hypotenuse
Find the hypotenuse of a right triangle with sides 12cm and 16cm
Answer: 20cm -
4. Ratio Sharing in a ratio
Divide 96 in the ratio 2:3:3
Answer: 24, 36 and 36 -
5. Statistics Mean
Calculate the mean of: 25, 9, 33, 41, 15, 19, 41. Give your answer to 2 decimal places
Answer: 26.14