ICSE Class 8 Math Ch-1 Rational Numbers Ex-1(B) From Selina Concise(2024-25) Part-2

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The chapter on rational numbers in the Selina Concise Mathematics textbook for ICSE Class 8 covers the following topics:
Definition: The definition of rational numbers and their properties
Representation: How to represent rational numbers on a number line
Operations: Addition and subtraction of rational numbers, and verifying the commutative property of rational numbers
Here are some important points about rational numbers:
A rational number is a number that can be expressed as a ratio of two integers, where the denominator is not zero.
A rational number remains the same if both the numerator and denominator are multiplied or divided by the same factor.
Adding zero to a rational number results in the same number.
Rational numbers are closed under addition, subtraction, and multiplication.
Zero is the additive identity for rational numbers, integers, and whole numbers.
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