Numerals on a Number Line

A number line is a line on which numbers are marked at intervals. It is used to show simple numerical operations, simply we can refer to a number line as a visual representation of all real numbers.

Let's take a look at the number line.

We can see from the number line above that there are some numbers missing and the numbers follow a particular sequence. We can get the difference in the numbers by subtracting the lesser number from the bigger number that is 20 – 15 = 5. Therefore the difference is 5, so in order to find the missing numerals, we add the difference of 5 to the number before it. So we can now have a complete number line as.