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Rational Numbers Class 8 Maths Formulas

Rational Numbers Class 8 Maths Formulas
Hey, students are you looking for Rational Numbers Class 8 Maths Formulas? If yes. Then you are at the right place. In this post, I have listed all the formulas of Rational Numbers class 8 that you can use to learn and understand the concepts easily.

If you want to improve your class 8 Math, Rational Number concepts, then it is super important for you to learn and understand all the formulas.

By using these formulas you will learn about Rational Numbers.

With the help of these formulas, you can revise the entire chapter easily.

Rational Numbers Class 8 Maths Formulas

  • Rational Number: A number is called rational if we can write the number in the form of $\frac{p}{q}$, where $p$ and $q$ are integers and $q \neq 0$ i.e., $1=\frac{1}{1}, 2=\frac{2}{1}, 0=\frac{0}{1}$ and $\frac{5}{8}, \frac{-3}{14}, \frac{7}{-15}$ are all rational numbers.
  • Additive Identity: $(a / b+0)=(a / b)$
  • Multiplicative Identity: $(\mathrm{a} / \mathrm{b}) \times 1=(\mathrm{a} / \mathrm{b})$
  • Closure Property - Addition: For any two rational numbers a and $b, a+b$ is also a rational number.
  • Closure Property - Subtraction: For any two rational numbers a and $b, a-$ $b$ is also a rational number.
  • Closure Property - Multiplication: For any two rational numbers a and $b, a x$ $b$ is also a rational number.
  • Closure Property - Division: Rational numbers are not closed under division.
  • Commutative Property - Addition: For any rational numbers a and $b, a+b=$ $b+a$.
  • Commutative Property - Subtraction: For any rational numbers a and b, a $b \neq b-a$.
  • Commutative Property - Multiplication: For any rational numbers $a$ and $b$, $(a x b)=(b x a)$.
  • Commutative Property - Division: For any rational numbers a and $b,(a / b) \neq$ (b/a).
  • Associative Property - Addition: For any rational numbers $a, b$, and $c,(a+$ $b)+c=a+(b+c)$.
  • Associative Property - Subtraction: For any rational numbers $a, b$, and c, $(a$ $-b)-c \neq a-(b-c)$
  • Associative Property - Multiplication: For any rational number $a, b$, and c, $(a \times b) \times c=a \times(b \times c)$.
  • Associative Property - Division: For any rational numbers $a, b$, and $c$, ( $a$ /b) / $\mathrm{c} \neq \mathrm{a} /(\mathrm{b} / \mathrm{c})$.
  • Distributive Property: For any three rational numbers $a, b$ and $c, a \times(b+c)$ $=(a \times b)+(a \times c)$.


Also Read,

Download NCERT Class 8 Maths Book

Download NCERT Class 8 Science Book

Download NCERT Class 8 Science Exemplar

Download NCERT Class 8 Maths Exemplar

If you have any Confusion related to Rational Numbers Class 8 Maths Formulas, then feel free to ask in the comments section down below.

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Comments

Amar
Nov. 26, 2023, 6:35 a.m.
Mathematics formula for class 8 rational number
Aishwarya
Sept. 11, 2022, 11:43 p.m.
it is really very helpful for my exam . As I was really scared for my math exam I need to learn the formulas and this app was really helpful for me Thank You
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