Keystones — Cornerstone
Five GCSE retrieval questions · 29 May 2021 · mathsvault.uk/keystones
-
1. Number Adding fractions
Calculate: 1⁄12 + 7⁄12
Answer: 2⁄3 -
2. Algebra Two-step equations
Solve: 3x - 8 = 10
Answer: x = 6 -
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 290 in the ratio 1:2:2
Answer: 58, 116 and 116 -
5. Statistics Mean
Calculate the mean of: 28, 36, 47, 5, 23, 42
Answer: 30.2