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Divisibility

Divisibility. Rules. What is Divisibility ?. Divisibility means that after dividing, there will be NO remainder. Can you tell by just looking at this number if it is divisible by 2 and 4 ? by 5? by 10? by 3 ? by 9? By 6?.

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Divisibility

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  1. Divisibility Rules

  2. What is Divisibility? Divisibility means that after dividing, there will beNOremainder.

  3. Can you tell by just looking at this number if it is divisible by 2 and 4 ? by 5? by 10? by 3 ? by 9? By 6? The divisibility rules can help YOU !!! 356,821

  4. Divisibility Ruleshelp you learn shortcuts to tell when a number can be divided by another number with NO remainder.

  5. A number is divisible by 2 if the number is even. 18 ÷ 2 = 9 22 ÷ 2 = 11 (Notice that both of these numbers are even.) 21 ÷ 2 = 10 R1 (Not an even number.) Divisibility by 2

  6. Are these numbers divisibleby 2? • 127 (Not an evennumber) • 937 (Not an evennumber) • 4678

  7. Now You Try • 458 • 1279 • 759 • 555 • 1050 Are these numbers divisible by 2?

  8. Divisibility by 3 • A number is divisible by 3 if the sum of the digits is divisible by 3. Is the number 135 divisible by 3? Add the digits: 1 + 3 + 5 = 9 Yes, 135 is divisible by 3 because the sum of the digits is divisible by 3.

  9. Now You Try • 3639 • 56 • 1286 • 3600 • 3468 Are these numbers divisible by 3?

  10. Dividing by 4 • If the last 2 digits together are divisible by 4

  11. Now You Try • 1584 • 2261 • 4256 • 9920 • 4767 Are these numbers divisible by 4?

  12. Divisibility by 5 • A number is divisible by 5 if it ends in 0 or5. 25 ÷ 5 = 5 23 ÷ 5 = 4 R3

  13. Now You Try • 3554 • 6890 • 1345 • 7902 • 4845 Are these numbers divisible by 5?

  14. A number is divisible by 6 if it is divisible by both 2 and 3. Is 42 divisible by 6? Is 51 divisible by 6? Divisibility by 6

  15. Now You Try • 2897 • 4258 • 5630 • 8345 • 484 Are these numbers divisible by 6?

  16. A number is divisible by 9 if the sum of its digits is divisible by 9. 369 is divisible by 9 because 3 + 6 + 9 =18 1 + 8 = 9 AND 9 is divisible by 9. Divisibility by

  17. Now You Try • 3578 • 7398 • 3248 • 1903 • 490 Are these numbers divisible by 9?

  18. A number is divisible by 10 if it ends in 0. 30 ÷ 10 = 3 340 ÷ 10 = 34 67 ÷ 10 = 6 R7 784 ÷ 10 =78 R4 Divisibility by

  19. Now You Try • 5578 • 8390 • 4248 • 1903 • 8490 Are these numbers divisible by 10?

  20. Divisible by 2 Divisible by 3 Divisible by 4 Divisible by 5 * Divisible by 6 Divisible by 9 Divisible by 10 REVIEW

  21. Divisibility By:

  22. After All…DIVISIBILITY Rules!!

  23. The End !! Divisibility Rules

  24. THE END Content: P. Frye, Oak Grove Elementary School, December 2003 Graphics: Microsoft Clip Gallery AllAboutFrogs.org Frogland

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