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Number System — Chapter Summary

ICSE · Class 6 · Mathematics

Summary of Number System for ICSE Class 6 Mathematics. Key concepts: The face value of a digit, To compare two numbers and To form the greatest number.

90 questions28 flashcards4 formulas & key relations5 concepts

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Overview

The Number System is the foundation of mathematics. It helps us understand how numbers are formed, how they are compared, and how we can perform operations on them. In this chapter, we learn about place value, face value, comparing numbers, forming the greatest and smallest numbers, operations on la

Key Concepts

The face value of a digit

The face value of a digit is the digit itself, while the place value depends on its position in the number. For example, in 5328, the face value of 3

To compare two numbers

To compare two numbers, first check the number of digits. The number with more digits is greater. If digits are equal, compare from left to right unti

To form the greatest number

To form the greatest number, arrange digits in descending order. For the smallest number, arrange in ascending order, but ensure 0 is not at the begin

We can add

We can add, subtract, multiply, and divide large numbers using standard methods. For example, ₹57,390 × 275 = ₹1,57,82,250. Careful alignment and carr

Estimation means making a rough calculation

Estimation means making a rough calculation. Rounding off numbers helps in estimation. For example, 547 rounded to nearest hundred is 500, and 562 is

Learning Objectives

  • Understand the difference between face value and place value of digits
  • Compare numbers using place value charts
  • Form the greatest and smallest numbers using given digits
  • Perform addition, subtraction, multiplication, and division on large numbers
  • Convert between different units of measurement

Frequently Asked Questions

What are the important topics in Number System for ICSE Class 6 Mathematics?
Key topics in Number System include Digits and Numbers, Place Value and Face Value, Comparing Numbers, Forming Greatest and Smallest Numbers. Study these first, then practise questions on each for Class 6 exams.
How should I revise Number System for Class 6 exams?
Learn the core ideas first, then work through the 90 practice questions on Number System. 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 Number System

All ICSE Class 6 Mathematics Chapter Summary

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