88.1k views
2 votes
What is the sum of all odd numbers between 100and120​

1 Answer

4 votes

Answer:

1100

Explanation:

What does it mean for a number to be odd or even?

An even number is a multiple of 2. For example, 2, 4, 6, 8, and 10 are all examples of that. An easy way to tell if a number is a multiple of 2 is by looking at the last number. 1674 is an even number, because it ends with a 4, whereas 1673 does not end with 0, 2, 4, 6...etc. making it an odd number.

The numbers 100-120 that are odd are:

(Remember, if a number is odd it ends in either 1, 3, 5, 7 or 9)

  • 101, 103, 105, 107, 109, 111, 113, 115, 117, and 119

Adding them all together:

  • 101 + 103 + 105 + 107 + 109 + 111 + 113 + 115 + 117 + 119 = 1100

Therefore, the sum of all numbers that are odd between 100 and 120 is 1,100.

User Vo Quoc Thang
by
8.1k points

No related questions found

Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.