Keystones — Cornerstone
Five GCSE retrieval questions · 22 April 2018 · mathsvault.uk/keystones
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1. Number Adding fractions
Add: 1⁄5 + 1⁄8
Answer: 13⁄40 -
2. Algebra Two-step equations
Solve: 6x + 12 = 42
Answer: x = 5 -
3. Geometry Pythagoras — hypotenuse
Find the hypotenuse of a right triangle with sides 8cm and 15cm
Answer: 17cm -
4. Ratio Sharing in a ratio
Share 65 in the ratio 3:2
Answer: 39 and 26 -
5. Statistics Mean
Find the mean of: 17, 20, 16, 19
Answer: 18