Keystones — Cornerstone
Five GCSE retrieval questions · 13 August 2020 · mathsvault.uk/keystones
-
1. Number Adding fractions
Calculate: 3⁄5 + 1⁄5
Answer: 4⁄5 -
2. Algebra Two-step equations
Solve: 3x + 4 = 25
Answer: x = 7 -
3. Geometry Pythagoras — hypotenuse
Calculate the hypotenuse when a = 5cm and b = 11cm
Answer: 12.08cm -
4. Ratio Sharing in a ratio
Divide 65 in the ratio 2:1:2
Answer: 26, 13 and 26 -
5. Statistics Mean
Find the mean of: 13, 12, 12
Answer: 12.333333333333