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Whole Numbers

Gujarat Board · Class 6 · Mathematics

Quick revision notes for Whole Numbers — Gujarat Board Class 6 Mathematics. Key concepts, formulas, and definitions for last-minute revision.

43 questions5 concepts

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Key Topics to Revise

1

Natural Numbers and Whole Numbers

  • Natural Numbers are the counting numbers: 1, 2, 3, 4, 5, … They start from 1 and go on forever.
  • There is NO largest natural number — you can always add 1 to get a bigger number.
  • Whole Numbers = Natural Numbers + Zero. So Whole Numbers are: 0, 1, 2, 3, 4, 5, …
2

Predecessor and Successor

  • The SUCCESSOR of any number is the number that comes just AFTER it. Successor = Number + 1.
  • The PREDECESSOR of any number is the number that comes just BEFORE it. Predecessor = Number – 1.
  • Every Natural Number has a successor.
3

The Number Line

  • A Number Line is a straight line on which Whole Numbers are marked at equal distances (unit distances) from each other.
  • On the Number Line: mark 0 first, then mark 1 to the right of 0 at unit distance, then 2 to the right of 1, and so on.
  • Numbers to the RIGHT are GREATER. Numbers to the LEFT are SMALLER.
4

Operations on the Number Line

  • ADDITION: To add two numbers on the Number Line, start at the first number and jump the second number of steps to the RIGHT. Example: 3 + 4 = Start at 3, jump 4 steps right → reach 7.
  • SUBTRACTION: To subtract on the Number Line, start at the first number and jump the number of steps being subtracted to the LEFT. Example: 7 – 5 = Start at 7, jump 5 steps left → reach 2.
  • MULTIPLICATION: To multiply on the Number Line, start at 0 and make equal jumps to the RIGHT. Example: 3 × 4 means start at 0, make 4 jumps of 3 units each → reach 12. So 3 × 4 = 12.

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Full Notes

Key Concepts

Natural numbers are the counting numbersWhole numbers include all natural numbersThe successor of any whole numberThe predecessor of any whole numberA number line is a straight

Frequently Asked Questions

What are the important topics in Whole Numbers for Gujarat Board Class 6 Mathematics?
Key topics in Whole Numbers include Whole Numbers – Complete Chapter Overview, Whole Numbers - Concept Overview, Whole Numbers - Complete Concept Map. These are the concepts Gujarat Board Class 6 examiners draw on most — study them first, then practise related questions.
How to score full marks in Whole Numbers — Gujarat Board Class 6 Mathematics?
Understand the core concepts first, then work through the 43 practice questions available for this chapter. Revise formulas and 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.

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