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Integers and the Number LinePowerPoint Presentation

Integers and the Number Line

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### Integers and the Number Line

Bob Guilbert

Constructing a Number Line

- A number line is drawn by choosing a starting position, usually 0, and marking off equal distance from that point

- Although only a portion of the number line is shown, the arrowheads indicate that the line and the set of numbers continue

- The set of numbers used on the number line is called the arrowheads indicate that the line and the set of numbers continueset of integers
- This set can be written
{…, -3, -2, -1, 0, 1, 2, 3, …}

- The number line is made up of 3 sets of numbers arrowheads indicate that the line and the set of numbers continue
- Natural numbers 1, 2, 3, 4, …
- Whole numbers 0, 1, 3, 4, …
- Integers …, -2, -1, 0, 1, 2, …

- We can use a Venn Diagram to represent thee 3 sets of numbers and their relationship to one another

- You should not include the number 0 numbers and their relationship to one another
- You should not include numbers less than 0 (negative numbers)
- You should not include the number 6 or any higher

- Positive numbers move to the right numbers and their relationship to one another
- Negative numbers move to the left
- + 3 + (-8) = -5

In Summary numbers and their relationship to one another

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