The numbers that can be expressed as a ratio of two integers.
A rational number can be written in the form of p/q, where p and q are integers and q ≠ 0.
We can also say that rational numbers are numbers that can be expressed as a fraction of two integers, with a non-zero denominator.
Examples of rational numbers:

1. 1/2 i.e; 1 divided by 2
2. 3/4 i.e; 3 divided by 4
3. -2/3 i.e; -2 divided by 3
4. 0 i.e; 0 is divided by any non-zero integer

Note: Not all numbers can be expressed as rational numbers.
Irrational numbers, such as √2 or π, cannot be expressed as the ratio of two integers.
Rational numbers can be further classified into different types, such as:

These are rational numbers that are greater than zero.
Examples

1. 1/2
2. 3/4
3. 7/8
4. 2/3
5. 9/11

These are rational numbers that are less than zero.
Examples

1. -1/2
2. -3/4
3. -7/8
4. -2/3
5. -9/11

These are rational numbers where the numerator is less than the denominator.
Examples

1. 1/2
2. 2/4
3. 1/8
4. 5/10
5. 3/11

These are rational numbers where the numerator is greater than or equal to the denominator
Improper fractions can be converted to mixed numbers, which are a whole number and a proper fraction
Examples

1. 5/2
2. 7/4
3. 9/3

These are rational numbers that can be written as a decimal with a finite number of digits after the decimal point.
Examples

1. 0.1
2. 0.2
3. 0.3

These are rational numbers that can be written as a decimal with an infinite number of digits after the decimal point.
Examples

1. 1/2 = 0.5
2. 1/5 = 0.2