Decimals 
can be placed onto a 
Number Line
to see "greater than" and "less than".

As you read a typical number line
from left to right,
the decimals will become greater,
and get closer to the next whole number.

0          0.1         0.2        0.3        0.4        0.5         0.6         0.7        0.8        0.9         1.0

On this number line
we can see that the decimal 0.7 
is closer to the whole number 1
than the decimal 0.4

0          0.1         0.2        0.3        0.4        0.5         0.6         0.7        0.8        0.9         1.0

This number line shows decimals 
between whole numbers 14 and 15.
We can see that 14.6 is greater than 14.2,
because it is further right on the number line,
and closer to the whole number 15.

14.0   14.1       14.2      14.3      14.4       14.5       14.6      14.7       14.8      14.9       15.0

Number lines can also help to 
see how to add, subtract, multiply, or divide
decimal numbers.

Here, let's add 0.3 + 0.5
To do this use the number line and start at 0.3,
then move 5 spaces to the right (each space equaling 0.1).
After moving, we see that we end up at 0.8
0.3 + 0.5 = 0.8

0          0.1         0.2        0.3        0.4        0.5         0.6         0.7        0.8        0.9         1.0
                                             +.1        +.1        +.1         +.1        +.1

Upon further review:

Number lines can:

* help determine greater than and less than

* help in adding (+), subtracting (-), multiplying (x), and dividing (÷).

Let's Practice