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Q: Is there a formula to add up all the numbers from 1 to 100?

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you add all the numbers and divide by how many numbers there are by the answer you get when tou add all the numbers

100

5050

It's 2550

All you do is add all of the numbers 3 times and 1 an 9 4 times

The sum is 2500.

-99

Add up all the numbers, divide the total by how many numbers there were. that is the formula for mean.

5050, ie (1 + 100) x (100/2)

You can either just add them up or use quick logic to add them in pairs: All the numbers from 1 to 49 match up with 51 through 99 to = 49 pairs of 100 = 4900, than add the two you skipped 4900 + 50 + 100 = 5050 total

If you can count from 1 to 100, then you can name them all. (And in numerical order, I might add.)

102*25=2550

Add them all together then divide the sum by 100 (move the decimal point two places to the left).

-99

You add all the numbers with + signs and subtract all that have minus signs.

no. it actually means that you add all the numbers together and your answer is the mean

Its when you add all the numbers together

The odd numbers 1-99 will be a higher total than the even numbers 2-98

101

The formula for the sum of an arithmetic sequence is ((first number) + (last number)) x (how many numbers) / 2, in this case, (1 + 100) x 100 / 2.The formula for the sum of an arithmetic sequence is ((first number) + (last number)) x (how many numbers) / 2, in this case, (1 + 100) x 100 / 2.The formula for the sum of an arithmetic sequence is ((first number) + (last number)) x (how many numbers) / 2, in this case, (1 + 100) x 100 / 2.The formula for the sum of an arithmetic sequence is ((first number) + (last number)) x (how many numbers) / 2, in this case, (1 + 100) x 100 / 2.

-99

Either go ahead and add them, or use the formula for an arithmetic series.

5050 To add all numbers from 1 to n: (n/2)(n + 1), in this case n = 100 so it is 50 x 101...

All numbers

Add all the numbers together; divide by the amount of numbers (for example, if you add three numbers, add the sum by 3).