Class 9 > Mathematics (Maths) Class 9 > What are Rational Numbers?
What are Rational Numbers? Video Lecture - Mathematics (Maths) Class 9
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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.
About this Video
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Indu Gupta |
Video Description: What are Rational Numbers? for Class 9 2023 is part of Mathematics (Maths) Class 9 preparation.
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42 videos|378 docs|65 tests
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Timeline
| 00:03 | Number Line & Integers |
| 00:18 | Rational Numbers |
| 00:39 | Conditions of the Rational Numbers |
| 01:22 | Definition of Rational Numbers |
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