Divisibility rules allow you to quickly determine if one number is evenly divisible by another. These flashcards list divisibility rules for the numbers 2, 3, 4, 5, 6, 8, 9, 10, and 12. Each card lists the rule and an optional example to which the rule can be applied. The size of the flashcards and color of the borders are customizable to your preferences. After you have customized the flashcards click the green button below to generate a customized PDF file containing your cards.

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A number is divisible by... | Example |
---|---|

2 if the last digit is even | 8928 |

3 if the sum of the digits is divisible by 3 | 357 |

4 if the last two digits form a number divisible by 4 | 9212 |

5 if the last digit is 5 or 0 | 2165 |

6 if the number is divisible by both 2 and 3 | 90 |

8 if the last three digits form a number divisible by 8 | 5560 |

9 if the sum of all the digits is divisible by 9 | 765 |

10 if the number ends in 0 | 740 |

12 if the number is divisible by both 3 and 4 | 96 |

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