The set of integer numbers is closed under addition if the addition of any two elements of the set produces another element in the set. If an element outside the set is produced, then the set of integers is not closed under addition. As with whole numbers, when we add a positive number we move to the right.

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The set of whole numbers W contains all the positive numbers including zero but does not include decimals or fractions. We write this as W = { 0, 1, 2, 3, 4, . . . } Those three dots mean the numbers keep going and going. Just like an endless railroad track. A way to visualize whole numbers is with dots on the number line:

## Answers ( )

Step-by-step explanation:The set of integer numbers is closed under addition if the addition of any two elements of the set produces another element in the set. If an element outside the set is produced, then the set of integers is not closed under addition. As with whole numbers, when we add a positive number we move to the right.

## Mark as branilist and follow me but please don’t report

Answer:The set of whole numbers W contains all the positive numbers including zero but does not include decimals or fractions. We write this as W = { 0, 1, 2, 3, 4, . . . } Those three dots mean the numbers keep going and going. Just like an endless railroad track. A way to visualize whole numbers is with dots on the number line:

Location of whole numbers on the number line.

Whole numbers on the number line.

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