Introduction to Whole number line:

Definition of Whole number:

In mathematics the term 'whole numbers' means a set of collection of numbers including all various authors use it in one of the following senses:

  • The non-negative integers are 0, 1, 2, 3, ...
  • The positive integers are 1, 2, 3, ...
  • All integers like as..., -3, -2, -1, 0, 1, 2, 3…
  • The not quite Whole integer 0.999...

 

 

Definition of Number line:

   In the mathematical explanation, a number line is a picture of a straight line on which every point is assumed to correspond to a real number and every real number to a point. Often the integers are shown as specially-marked points evenly spaced on the line.

(Source: Wikipedia).

 

Problems on Whole number line:

 

Here we see about some example problems on whole number line.

Example 1: whole number addition with number line

                5+6. Draw number line.

Solution:

              Given: 5 +6

The addition of 5 and 6 is,

            5

    (+)   6

          -----

           11

          ------

Answer: +11

Number line:

                                                       + 6

                           |------------>>>>--------->>>>-----------------|

|------|------|------|------X------|--------|--------|--------|---------|---------X------|-------|---- --|

1     2    3     4      5      6       7       8      9        10       11   12    13     14

Here The 5 is initial point. And 11 is end point.

Example 1: whole number subtraction with number line

    7-2. Draw number line.

Solution:

Given: 7 -2

The addition of 5 and 6 is,

            7

    (-)    2

          -----

           5

          ------

Answer : +5

Number line:

                                    -2

                          |-----<<<-----|

|------|------|------|-----X------|------X-------|------|-------|--------|-------|----- -|-------|

1     2     3     4     5     6      7       8     9     10     11    12     13    14

Here The 7 is initial point. And 5 is end point.

 

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More problems on number line:

 

Example 1: whole number addition

    3+6. Draw number line.

Solution:

Given: 3 +6

The addition of 3 and 6 is,

            3

    (+)   6

          -----

           9

          ------

Answer : +9

Number line:

                                    +6

               |-------->>>---------->>>-----------------|

|------|------X------|-------|-------|------|--------|--------X----------|-------|------|--------|------

1     2     3      4      5      6     7       8        9        10      11   12     13    

Here The 3 is initial point. And 9 is end point.