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Revision Notes

Test of Divisibility

ICSE · Class 4 · Mathematics

Quick revision notes for Test of Divisibility — ICSE Class 4 Mathematics. Key concepts, formulas, and definitions for last-minute revision.

121 questions30 flashcards5 concepts

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Key Topics to Revise

1

Divisibility by 2, 5, and 10

  • A number is divisible by 2 if its last digit is even (0, 2, 4, 6, 8).
  • A number is divisible by 5 if its last digit is 0 or 5.
  • A number is divisible by 10 if its last digit is 0.
2

Divisibility by 3 and 9

  • Add all the digits of the number. If the sum is divisible by 3, the number is divisible by 3.
  • If the sum of digits is divisible by 9, the number is divisible by 9.
3

Divisibility by 6

  • A number is divisible by 6 only if it is divisible by both 2 and 3.
  • First, check if the last digit is even (divisible by 2), then check if the digit sum is divisible by 3.

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Full Notes

Key Concepts

A number is divisible by 2Add all the digits ofA number is divisible by 5A number is divisible by 6Add all the digits of

Frequently Asked Questions

What are the important topics in Test of Divisibility for ICSE Class 4 Mathematics?
Test of Divisibility covers several key topics that are frequently asked in ICSE Class 4 board exams. Focus on the core concepts listed on this page and practise related questions to build confidence.
How to score full marks in Test of Divisibility — ICSE Class 4 Mathematics?
Understand the core concepts first, then work through the 121 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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All 17 chapters — ICSE Class 4 Mathematics Revision Notes

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