The Set Of Whole Number From 1 To 20. By using the formula sum of first n numbers is equal to nn12. Link to this worksheet.

We will check this manually 1234567891011121314151617181920 210. The whole numbers are the numbers without fractions and it is a collection of positive integers and zero. 202012 4202 210 So the sum of the numbers from 1 to 20 is 210.
All whole numbers are also integers.
Number 1 to 20 Students read the number and listen to the correct pronunciation. The sum of the first n natural numbers. The set of whole numbers in Mathematics is the set 0 123This set of whole numbers is denoted by the symbol W. I sum i.