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Formula Sheet

Rational Numbers — Formula Sheet

Gujarat Board · Class 8 · Mathematics

4 formulas from Rational Numbers (Gujarat Board Class 8 Mathematics) on one page, grouped by topic. Part of the Gujarat Board Class 8 Mathematics syllabus.

45 questions4 formulas & key relations5 concepts

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A nested Venn diagram illustrating the relationships between natural numbers (N), integers (Z), rational numbers (Q), and real numbers (R) as subsets of each other.
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4 Entries · 4 Sections

Formulas and Key Relations

What Are Rational Numbers?

Every integer is a rational number (e.g., -2 = -2/1).

Commutativity Property

Multiplication is commutative for rational numbers

a × b = b × a.

Associativity Property

Multiplication is associative for rational numbers

a × (b × c) = (a × b) × c.

Key relations

Zero is the additive identity for rational numbers because adding zero to any rational number gives back that same rational number: a + 0 = 0 + a = a.

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Frequently Asked Questions

What are the important topics in Rational Numbers for Gujarat Board Class 8 Mathematics?
Key topics in Rational Numbers include What Are Rational Numbers?, Closure Property, Commutativity Property, Associativity Property. Study these first, then practise questions on each for Class 8 exams.
How many formulas are in Rational Numbers?
This sheet lists 4 formulas from Rational Numbers, grouped by topic. Learn what each symbol stands for so you can apply the formula, not just recall it.
How should I revise Rational Numbers for Class 8 exams?
Learn the core ideas first, then work through the 45 practice questions on Rational Numbers. Revise definitions regularly and use flashcards for quick recall before the exam.

Sources & Official References

Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.

More resources for Rational Numbers

All Gujarat Board Class 8 Mathematics Formula Sheet

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