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Syllabus

Number System — Syllabus

ICSE · Class 6 · Mathematics

What Number System covers in ICSE Class 6 Mathematics: 4 topics, for the 2026-27 session. Part of the ICSE Class 6 Mathematics syllabus.

90 questions28 flashcards4 formulas & key relations5 concepts

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4 Topics · ICSE Class 6 Mathematics · 2026-27

Topics in Number System

1

1. Digits and Numbers

  • There are 10 digits: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9.
  • All numbers are formed using these digits, with or without repetition.
  • A number cannot start with 0. For example, 023 is not a valid 3-digit number.
2

2. Place Value and Face Value

  • Place value depends on the position of a digit in a number.
  • Face value is the digit itself, regardless of position.
  • Place value of 0 is always 0, no matter where it is placed.
3

3. Comparing Numbers

  • If numbers have different digits, the one with more digits is greater.
  • If digits are equal, compare from left to right.
  • Use place value charts to compare large numbers step by step.
4

4. Forming Greatest and Smallest Numbers

  • To form the greatest number: arrange digits in descending order.
  • To form the smallest number: arrange digits in ascending order, but never start with 0.
  • If 0 is included, place the smallest non-zero digit first, then 0, then others in ascending order.

Key Concepts

Central concept: Number System

Place Value and Face ValueComparing NumbersForming Smallest and Greatest NumbersOperations on Large NumbersEstimation and ApproximationUnits and Numbers

Work through every topic in Number System with notes and quizzes

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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 Syllabus

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