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Divisability Rulesppt
Divisability Rulesppt
Divisability Rulesppt
Divisability Rulesppt
Divisability Rulesppt
Divisability Rulesppt
Divisability Rulesppt
Divisability Rulesppt
Divisability Rulesppt
Divisability Rulesppt
Divisability Rulesppt
Divisability Rulesppt
Divisability Rulesppt
Divisability Rulesppt
Divisability Rulesppt
Divisability Rulesppt
Divisability Rulesppt
Divisability Rulesppt
Divisability Rulesppt
Divisability Rulesppt
Divisability Rulesppt
Divisability Rulesppt
Divisability Rulesppt
Divisability Rulesppt
Divisability Rulesppt
Divisability Rulesppt
Divisability Rulesppt
Divisability Rulesppt
Divisability Rulesppt
Divisability Rulesppt
Divisability Rulesppt
Divisability Rulesppt
Divisability Rulesppt
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Divisability Rulesppt

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  • 1. Divisibility Rules 2 3 4 5 6 9 10
  • 2. What does it mean? "Divisible by . . ."
  • 3. <ul><li>If you divide one number by another, the result is a whole number WITHOUT a remainder. </li></ul><ul><li>Examples: </li></ul><ul><li>21 ÷ 7 = 3 No remainder </li></ul><ul><li>56 ÷ 2 = 28 No remainder </li></ul>&quot;Divisible by&quot; means . . .
  • 4. <ul><li>A number is divisible by 2 if the last digit is even . (0, 2, 4, 6, 8) </li></ul><ul><li>Examples: </li></ul><ul><li>6 4 49,82 2 </li></ul>Divisibility Rule for 2
  • 5. <ul><li>Which number IS NOT divisible by 2? </li></ul><ul><li>684 2788 103 </li></ul>Now, You Try!
  • 6. Wonderful !
  • 7. It ends in a O, 2, 4, 6 or 8
  • 8. <ul><li>A number is divisible by three if the sum of the digits is divisible by 3. </li></ul><ul><li>Examples: </li></ul><ul><li>81 8 + 1 = 9 9 ÷ 3 = 3 No Remainder </li></ul><ul><li>231 2 + 3 + 1 = 6 6 ÷ 3 = 2 No Remainder </li></ul>Divisibility Rule for 3
  • 9. <ul><li>Which number IS NOT divisible by 3? </li></ul><ul><li>642 1644 729 </li></ul>Now, You Try
  • 10. The sum is divisible by 3
  • 11. Wonderful !
  • 12. <ul><li>A number is divisible by 4 if the last two digits form a number that is divisible by 4. </li></ul><ul><li>Examples: </li></ul><ul><li>38 20 20 ÷ 4 = 5 </li></ul><ul><li>6 72 72 ÷ 4 = 18 </li></ul>Divisibility Rule for 4
  • 13. <ul><li>Which number IS NOT divisible by 4? </li></ul><ul><li>112 5610 488 </li></ul>Now You Try
  • 14. Wonderful !
  • 15. The last 2 digits form a number divisible by 4
  • 16. <ul><li>A number is divisible by 5 if the last digit is a 0 or 5 . </li></ul><ul><li>Examples: </li></ul><ul><li>32 5 ends in a 5 </li></ul><ul><li>347 0 ends on a 0 </li></ul>Divisibility Rule for 5
  • 17. <ul><li>Which number IS NOT divisible by 5? </li></ul><ul><li>6520 657 465 </li></ul>Now, You Try
  • 18. The number ends in 0 or 5
  • 19. Wonderful !
  • 20. <ul><li>A number is divisible by 6 when it is divisible by 2 AND 3 . (prime numbers) </li></ul><ul><li>Examples: </li></ul><ul><li>204 ends in an even number (2 rule) </li></ul><ul><li>sum of the digits is divisible by 3 </li></ul>Divisibility Rule for 6
  • 21. <ul><li>Which number IS NOT divisible by 6? </li></ul><ul><li>7800 427 5502 </li></ul>Now, You Try
  • 22. Way To Go !
  • 23. This number is divisible by 2 and 3
  • 24. <ul><li>A number is divisible by 9 if the sum of the digits is divisible by 9. </li></ul><ul><li>Examples: </li></ul><ul><li>351 3 + 5 + 1 = 9 9 ÷ 9 = 1 </li></ul><ul><li>3555 4 + 5 + 5 + 5 =18 18 ÷ 9 =2 </li></ul>Divisibility Rule for 9
  • 25. <ul><li>Find the number that IS NOT divisible by 9. </li></ul><ul><li>9873 693 5541 </li></ul>Now, You Try
  • 26. The sum of the digits is divisible by 9
  • 27. Great Job !
  • 28. <ul><li>A number is divisible by 10 is it ends in a ZERO. </li></ul><ul><li>Example: </li></ul><ul><li>456 0 ends in a zero </li></ul><ul><li> 431 0 ends in a zero </li></ul>Divisibility Rule for 10
  • 29. <ul><li>Find the number that IS NOT divisible by ten. </li></ul><ul><li>47,870 5892 458 </li></ul>Now, You Try
  • 30. The number ends in 0
  • 31. Way To Go !
  • 32. <ul><li>Grab a piece of paper and check how well you know the rules. </li></ul>Try It Out <ul><li>456 – 2 3 4 5 6 9 10 </li></ul><ul><li>801 – 2 3 4 5 6 9 10 </li></ul><ul><li>55,602 – 2 3 4 5 6 9 10 </li></ul><ul><li>51 – 2 3 4 5 6 9 10 </li></ul><ul><li>381 – 2 3 4 5 6 9 10 </li></ul>
  • 33. <ul><li>Grab a piece of paper and check how well you know the rules. </li></ul>Try It Out <ul><li>456 – 2 3 4 5 6 9 10 </li></ul><ul><li>801 – 2 3 4 5 6 9 10 </li></ul><ul><li>55,602 – 2 3 4 5 6 9 10 </li></ul><ul><li>51 – 2 3 4 5 6 9 10 </li></ul><ul><li>381 – 2 3 4 5 6 9 10 </li></ul>

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