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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? 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? 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 No (ending in 0, 2, 4, 6, 8)

  6. Are these numbers divisible by 2? No Not an even number. No Not an even number. An even number.

  7. Divisibility by 5 • A number is divisible by 5 if it ends in 0 or5. 25 ÷ 5 = 5 23 ÷ 5 = 4 R3 No

  8. 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 No No

  9. Divisibility By: No No No No No No

  10. 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.

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

  12. 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 42 (2), 4+2 (3) 51 (2), 5+1 (3) No

  13. A number is divisible by 4 if the last two digits form a number divisible by 4 Are these numbers divisible by 4? 1222 3421 6712 90 408 Divisibility by 4 No No

  14. Divisibility by 12 • Are these numbers divisible by 12? • 12? 1+2=3, 12 14? 1+4=5, 14 No

  15. Can you tell by just looking at this number if it is divisible by 2? by 5? by 10? by 3 ? by 9? By 6? The divisibility rules can help YOU !!! 356 821 No No No No No No

  16. 356 821Find the closest number to this number which fits the chart 356 820 or 356 822 Ends in an even digit 356 820 Sum of the digits / 3 356 820 Last two digits / 4 356 820 Ends in a 0 or 5 356 820 Divisible, both 2 and 3 356 823 Sum of the digits / 9 356 820 Ends in a 0 356 820 Divisible, both 3 and 4

  17. Divisibility By: X X X X X X X X X X X X X X X X X X X

  18. I love divisibility

  19. The End !! Divisibility is Un-frog-getable !!

  20. THE END Content: P. Frye, Oak Grove Elementary School, December 2003Revised S. Roache, Hillcrest Academy 2008 Graphics: Microsoft Clip Gallery AllAboutFrogs.org Frogland

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