1 / 14

Divisibility Rules

Divisibility Rules. How do we know when we can divide one number into another exactly?. Jenny Russell. Divisibility Rules (2). A number can be divided by 2 if the last digit is even. Divisibility Rules (3). a number is divisible by 3 if the sum of the digits is 3, 6 or 9.

ppeggy
Télécharger la présentation

Divisibility Rules

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. Divisibility Rules How do we know when we can divide one number into another exactly? Jenny Russell

  2. Divisibility Rules (2) • A number can be divided by 2 if • the last digit is even

  3. Divisibility Rules (3) • a number is divisible by 3 if • the sum of the digits is 3, 6 or 9

  4. Divisibility Rules (4) • a number is divisible by 4 if • the number made by the last two digits can be divided by 4

  5. Divisibility Rules (5) • A number is divisible by 5 if • the last digit is a 5 or a 0

  6. Divisibility Rules (6) • A number can be divided by 6 if • the last digit is even and the sum of all the digits is 3, 6 or 9

  7. Divisibility Rules (8) • A number is divisible by 8 if • the number made by the last three digits will be divisible by 8

  8. Divisibility Rules (9) • A number is divisible by 9 if • the sum of all the digits will add to 9

  9. Divisibility Rules (10) • A number can be divided by 10 if • the last digit is a 0

  10. Divisibility Rules • A number can be divided by 7 if • ……………… can you find a rule?

  11. Divisibility Rules • 2, the last digit will be an even number • 3, all the digits will add to 3,6 or 9 • 4, the number made by the last two digits can be divided by 4 • 5, the last digit will be a 5 or 0

  12. Divisibility Rules • 6, the last digit will be even and the digits will add to 3, 6 or 9 • 8, the number made by the last three digits will be divisible by 8

  13. Divisibility Rules • 9, the sum of the digits will be 9 • 10, the last digit will be a 0 • There is no easy test for 7, although some methods have been invented, however it is easier to use a pencil and paper method.

  14. Divisibility Rules • Apply these rules to theses numbers: • 74,673,042 • 444,555,448 • 61,616,168 • 732,510 • 66,666,666 • 179,131,590

More Related