Overview
Factors and Multiples

Divisibility and Divisibility Rules

 Video Tutorial

Key Aspects:
  • What Divisibility Means
  • Divisibility Rules for 2, 5, and 10
  • Divisibility Rules for 4 and 8
  • Divisibility Rules for 3, 9, and 6
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 Revision Cards

1) What Divisibility Means

Divisibility and equivalent statements. For example, statement 15 is divisible by 5 is equivalent to 15 is a multiple of 5, or 5 is a factor of 15.

2) Divisibility Rules for 2, 5, and 10

Divisibility rules chart showing conditions for numbers to be divisible by 2, 5, and 10, with examples and numerical illustrations.

3) Divisibility Rules for 4 and 8

Divisibility rules. A number is divisible by 4 if its last 2 digits are divisible by 4, and divisible by 8 if its last 3 digits are divisible by 8.

4) Divisibility Rules for 3, 9, and 6

A number is divisible by 3 or 9 if its sum of digits is divisible by 3 or 9, respectively. A number is divisible by 6 if divisible by 3 and even.

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 Exercises

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