Keystones — Cornerstone
Five GCSE retrieval questions · 5 August 2021 · mathsvault.uk/keystones
-
1. Number Adding fractions
Add: 2⁄3 + 2⁄7
Answer: 20⁄21 -
2. Algebra Two-step equations
Solve: 3x + 12 = 48
Answer: x = 12 -
3. Geometry Pythagoras — hypotenuse
Find the hypotenuse of a right triangle with sides 9cm and 12cm
Answer: 15cm -
4. Ratio Sharing in a ratio
Divide 102 in the ratio 2:1:3
Answer: 34, 17 and 51 -
5. Statistics Mean
Find the mean of: 14, 8, 5
Answer: 9