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Rational Numbers, Maths, Class 8 Chapter Notes PDF Download

Natural Numbers: We know that Natural Numbers are counting numbers. We can represent Natural Numbers indefinitely to the right of 1 on the number line.

Whole Numbers: Whole Numbers are Natural Numbers including zero. We can represent Whole Numbers indefinitely to the right of Zero on the number line.

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FAQs on Rational Numbers, Maths, Class 8 Chapter Notes

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, negative, or zero, and they include fractions, integers, and whole numbers.
2. How can rational numbers be represented on a number line?
Ans. Rational numbers can be represented on a number line by marking the position of the corresponding fraction or decimal. The number line is divided into equal intervals, and the rational number is plotted at the appropriate position based on its value.
3. How can we determine if a given number is rational or not?
Ans. To determine if a given number is rational or not, we need to check if it can be expressed as a fraction or ratio of two integers. If it can be written in the form of a/b, where a and b are integers and b is not equal to zero, then the number is rational. Otherwise, it is irrational.
4. Can a decimal number be a rational number?
Ans. Yes, a decimal number can be a rational number. If a decimal number terminates or repeats in a pattern, it can be expressed as a fraction and hence is considered a rational number. For example, 0.25, 1.333..., and 0.666... are all rational numbers.
5. Are all whole numbers rational numbers?
Ans. Yes, all whole numbers are rational numbers. Whole numbers can be expressed as fractions with a denominator of 1. For example, the whole number 5 can be written as 5/1, which is a fraction and hence a rational number.
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