Rational Numbers

Rational numbers are numbers that can be written as a fraction, where the numerator and denominator are both integers (whole numbers). They can be written in the form a/b, where a and b are integers and b is not equal to 0.

Examples of Rational Numbers

• 1/2
• -3/4
• 5
(can be written as 5/1)
• 0
(can be written as 0/1)

Properties of Rational Numbers

1. Rational numbers can be added, subtracted, multiplied, and divided.
2. The sum or product of two rational numbers is also a rational number.
3. Rational numbers can be represented on a number line.
4. Every integer is a rational number (for example, 5 can be written as 5/1).

Operations with Rational Numbers

Addition and Subtraction

To add or subtract rational numbers, first make sure the denominators are the same. Then, add or subtract the numerators and keep the denominator the same.

Multiplication and Division

To multiply or divide rational numbers, simply multiply or divide the numerators and denominators.

Study Guide

1. Understand the definition of rational numbers and be able to identify examples of rational numbers.
2. Practice adding, subtracting, multiplying, and dividing rational numbers.
3. Be able to represent rational numbers on a number line.
4. Understand the relationship between rational numbers and integers.