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Quick Revision: Rational Numbers Video Lecture | Mathematics (Maths) Class 7 (Old NCERT)
FAQs on Quick Revision: Rational Numbers Video Lecture - Mathematics (Maths) Class 7 (Old NCERT)
| 1. What are rational numbers? |  |
Ans. Rational numbers are numbers that can be expressed as a fraction where the numerator and denominator are both integers, and the denominator is not zero.
| 2. How can we identify if a number is rational? | |
Ans. To determine if a number is rational, we can check if it can be expressed as a fraction. If it can be written in the form a/b where a and b are integers and b is not equal to zero, then the number is rational.
| 3. Can all integers be considered rational numbers? | |
Ans. Yes, all integers can be considered rational numbers. Integers can be expressed as a fraction with a denominator of 1. For example, the integer 5 can be written as 5/1, making it a rational number.
| 4. How do we add and subtract rational numbers? | |
Ans. To add or subtract rational numbers, we first ensure that the denominators are the same. Then, we simply add or subtract the numerators while keeping the common denominator unchanged.
| 5. Are all fractions considered rational numbers? | |
Ans. Yes, all fractions are considered rational numbers because they can be expressed as a ratio of two integers. Fractions are a subset of rational numbers.
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