What are Rational Numbers?

# What are Rational Numbers? Video Lecture - Mathematics (Maths) Class 9

## Mathematics (Maths) Class 9

42 videos|378 docs|65 tests

## FAQs on What are Rational Numbers? Video Lecture - Mathematics (Maths) Class 9

 1. What are rational numbers? Ans. Rational numbers are numbers that can be expressed as a fraction or a ratio of two integers. They can be positive or negative and include whole numbers, integers, and fractions.
 2. How do you identify if a number is rational? Ans. To identify if a number is rational, you need to check if it can be expressed as a fraction. If a number can be written as a ratio of two integers, it is rational. For example, 3/4, -5/2, and 2 are all rational numbers.
 3. Are all integers rational numbers? Ans. Yes, all integers are rational numbers. Since integers can be expressed as a fraction with a denominator of 1, they meet the criteria of being rational numbers. For example, 5 can be written as 5/1, making it a rational number.
 4. Are irrational numbers considered rational? Ans. No, irrational numbers are not considered rational. Irrational numbers are numbers that cannot be expressed as a fraction or ratio of two integers. Examples of irrational numbers include π (pi) and √2 (square root of 2).
 5. Can rational numbers be negative? Ans. Yes, rational numbers can be negative. Rational numbers include both positive and negative numbers that can be expressed as a fraction. For example, -3/5, -2, and -7/2 are all examples of negative rational numbers.

## Mathematics (Maths) Class 9

42 videos|378 docs|65 tests

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