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Number Line

Writing numbers down on a Number Line makes it easy to tell
which numbers are greater or lesser

A number on the left is less than a number on the right.

Examples:

  • v is less than viii
  • −ane is less than 1
  • −viii is less than −5

A number on the correct is greater than a number on the left.

Examples:

  • 8 is greater than 5
  • 1 is greater than −1
  • −5 is greater than −8

Try this interactive number line (click to mark):

numbers/images/number-line.js?manner=int

You tin too try the zoomable number line.

lunch

Example: Dejeuner

  • John borrowed $3 to pay for his lunch
  • Virginia borrowed $v to pay for her lunch
  • Alex had enough money for lunch and has $3 left over

Place these people on the number line to discover who is poorest and who is richest.

Attributable coin is negative
Having coin is positive

So John has "−3", Virginia has "−5" and Alex has "+3"

greater less
number line: -5, -3, 3

Now it is easy to see that:

Virginia is poorer than John (−5 is less than −3)
and John is poorer than Alex (−3 is less than 3)
and Alex is, of course, the richest!

Using The Number Line

We tin can use the number line to assistance us add together. Nosotros always motility to the right to add.

Nosotros tin use the number line to assist u.s. subtract. Nosotros always motion to the left to subtract.

Read How to Utilize the Number Line to Add together and Subtract.

Footnote: Absolute Value

Accented Value ways to recall but about how far a number is from zero.

absolute value -6 is 6, 6 is 6

For case "6" is 6 away from zero, only "−6" is also 6 away from cypher.

And so the absolute value of 6 is 6, and the absolute value of −6 is also vi

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