# Summary

• A rational number is of the form, where
• q â‰  0.Â
• Every rational number can be expressed as a real number.
• The real number consists of natural, whole number, integer, rational number and irrational number.
• Every point on the number line represents a unique number.
• The decimal numbers are either terminating or non-terminating.
• Terminating decimal ends up at a certain point, whereas the non-terminating decimal does not end up.

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Example:

2.365, 14.56 â€“ Terminating decimal,

0.2569810â€¦, 48.235235â€¦..- non-terminating decimals

The terminating and the non-terminating recurring decimals can also be written in the form of a rational number.

A non-terminating non-recurring decimal number can be written as an irrational number.

By the process of successive magnification, the irrational number can be marked on a number line.

To rationalize the denominator by multiplying and dividing the conjugate of that number.

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Example : =