what is 80+80

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To find the sum of 80+80, you simply need to add the two numbers together. This can be done manually or with the help of a calculator. Here's how to do it:

Manually:
Start by adding the two rightmost digits, which are both zeros: 0 + 0 = 0. Write down the 0 in the rightmost position. Next, add the remaining digits: 8 + 8 = 16. Write down the 6 in the second position, and carry the 1 to the left. Lastly, add the carried 1 to the leftmost digit: 1 + 8 = 9. Write down the 9 in the leftmost position. Combining all the digits, the sum is 160.

With a calculator:
Enter the number 80, press the addition (+) button, and then enter the number 80. Finally, press the equals (=) button. The result will be displayed on the calculator as 160.

So, the sum of 80+80 is 160.