answersLogoWhite

0

What is the sum of the numbers 21 to100?

User Avatar

Anonymous

∙ 13y ago
Updated: 8/20/2019

Without just going and doing the addition, you can use this formula:

Sum of 1 to N is: (N+1)*N/2. So take sum of [1 to 100], then subtract off the sum of [1 to 20], and you'll have left the sum [21 to 100].

Sum [1-100] = (100+1)*100/2 = 5050. Sum[1-20] = (20+1)*20/2 = 210.

So 5050 - 210 = 4840

User Avatar

Wiki User

∙ 13y ago
Copy

What else can I help you with?

Related Questions

What is the sum of the six smallest counting numbers?

21


What is the sum of the first 21 square numbers?

100


What is the sum of the numbers on a standard die?

The total is 21.


What are Sum of 3 consecutive numbers in 66?

The numbers are 21, 22 and 23.


The sum of two consecutive odd numbers is 21 What are the two numbers?

There are none.


Three consecutive numbers have a sum of 66?

The numbers are 21, 22 and 23.


What are the numbers if the difference of two numbers is 16 Their sum is 26?

5 & 21


What are the two consecutive numbers whose sum is 41?

The numbers are 20 and 21.


What is the sum of the first six positive numbers?

The sum of the first six positive numbers (1 to 6) is 21.


What sum of two numbers is 58 and their difference is 16 find the numbers?

37 + 21 = 5837 - 21 = 16The two numbers therefore are 37 and 21.


Two numbers have a sum of 47 their difference is 5 what are the two numbers?

The numbers are 26 and 21


The difference of 2 numbers is 1and there sum is 21.what are the 2 numbers?

The numbers are 11 and 10

Trending Questions
What happens to the fraction if the numerator is increased? How much time does it take to replace the main seal on a 2005 dodge cummins 4x4 diesel? Area of Manitoba? How much does 50 Cent Weight? In statistics what is meant by individuals? Why is Nicolas Cage's hair a bird and how does that make my argument invalid? Do you capitalize the names of political parties in a sentence? What is the meaning of sanchita? Is Elijah Cummings single? What is the best rated wood filler on the market and why is it highly recommended by users and professionals? Will ceramic survive a house fire? Where can find Noble shotgun serial number location? How do you say taco enchalada and rice or beans in spanish? What is 1 divided by 23 in simplest form? I have just got a girlfriend and have had her a week and she has tried to dump me because I came on too strong but I asked if we can start over and said she'll think about it what should I do? What furniture is made out of Softwood? What time period was the mystery and melancholy of the street painted? The average rate of erosion on the moon is far less then here on earth? When was Martyn Barry born? What is the intensity level of the Raging Bull at Six Flags?

Resources

Leaderboard All Tags Unanswered

Top Categories

Algebra Chemistry Biology World History English Language Arts Psychology Computer Science Economics

Product

Community Guidelines Honor Code Flashcard Maker Study Guides Math Solver FAQ

Company

About Us Contact Us Terms of Service Privacy Policy Disclaimer Cookie Policy IP Issues
Answers Logo
Copyright ©2025 Answers.com. All Rights Reserved. The material on this site can not be reproduced, distributed, transmitted, cached or otherwise used, except with prior written permission of Answers.