Keystones — Cornerstone
Five GCSE retrieval questions · 1 March 2021 · mathsvault.uk/keystones
-
1. Number Adding fractions
Calculate: 7⁄9 + 1⁄9
Answer: 8⁄9 -
2. Algebra Two-step equations
Solve: 3x - 7 = 17
Answer: x = 8 -
3. Geometry Pythagoras — hypotenuse
Find the hypotenuse of a right triangle with sides 7cm and 24cm
Answer: 25cm -
4. Ratio Sharing in a ratio
Divide 330 in the ratio 4:3:4
Answer: 120, 90 and 120 -
5. Statistics Mean
Find the mean of: 2, 20, 12
Answer: 11.333333333333