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Age 14 to 16 Short
Challenge Level

If $p$ is a positive integer and $q$ is a negative integer, which of the following is the greatest?

$p-q$             $q-p$             $p+q$             $-p-q$
 

 

 

 

This problem is taken from the UKMT Mathematical Challenges.
You can find more short problems, arranged by curriculum topic, in our short problems collection.
The NRICH Project aims to enrich the mathematical experiences of all learners. To support this aim, members of the NRICH team work in a wide range of capacities, including providing professional development for teachers wishing to embed rich mathematical tasks into everyday classroom practice.
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