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What is the sum of all the integers between -12.1 and 13.3?

 Jul 1, 2021
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Note -12 is the largest whole number in -12.1, and 13 is the largest whole number in 13.3

 

...- -12- -11- -10- -9- -8-...-7-8-9-10-11-12-13-...

 

So the numbers we have here are -12 to 13. notice that when we add the numbers up, they cancel, like -12 and 12. So, the only number we have left is $\boxed{13}$ 

 Jul 1, 2021

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