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How to calculate 1-2 plus 3-4 plus 5-6-------- plus 19-20?

Anonymous

∙ 15y ago

Updated: 8/19/2019

Group the numbers in pairs. You have ten pairs, each of which is equal to -1 and the ten are to be added together. Total = -10

Wiki User

∙ 15y ago

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Related Questions

What is 34 plus 34 plus 12 plus 12?

92

12 plus what equals to 34?

It is: 12 plus 22 = 34

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