Keystones — Cornerstone
Five GCSE retrieval questions · 28 September 2019 · mathsvault.uk/keystones
-
1. Number Adding fractions
Add: 1⁄4 + 2⁄3
Answer: 11⁄12 -
2. Algebra Two-step equations
Solve: 6x + 11 = 71
Answer: x = 10 -
3. Geometry Pythagoras — hypotenuse
Calculate the hypotenuse when a = 6cm and b = 15cm
Answer: 16.16cm -
4. Ratio Sharing in a ratio
Divide 243 in the ratio 2:4:3
Answer: 54, 108 and 81 -
5. Statistics Mean
Find the mean of: 7, 19, 16, 11, 2
Answer: 11