Negative numbers can seem peculiar on first encounter. That is true historically. [br][br]This article from Nrich gives a short summary of how negative numbers came to be: [url=https://nrich.maths.org/5747]https://nrich.maths.org/5747[/url][br][br]This second article gives credit to some of the various cultures who are part of the negative number story: [url=https://nrich.maths.org/5961]https://nrich.maths.org/5961 [/url][br][br]Lastly, this third article gives some ways to intuitively understand the arithmetic operations of negative numbers. [url=https://nrich.maths.org/9958]https://nrich.maths.org/9958[/url]