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2, 3, 4, 5, 6, 9, 10

Divisibility Rules. 2, 3, 4, 5, 6, 9, 10. “Divisible BY” What does it mean?. “Divisible by” means: If you divide one number by another, the result is a whole number WITHOUT a remainder. Examples: 12 ÷ 6 = 2 No remainder 15 ÷ 5 = 3 No remainder . Divisibility Rule 2.

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2, 3, 4, 5, 6, 9, 10

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  1. Divisibility Rules 2, 3, 4, 5, 6, 9, 10

  2. “Divisible BY”What does it mean?

  3. “Divisible by” means: If you divide one number by another, the result is a whole number WITHOUT a remainder. Examples: 12 ÷ 6 = 2 No remainder 15 ÷ 5 = 3 No remainder

  4. Divisibility Rule 2 A number is divisible by 2 if the last digit is even. (0, 2, 4, 6, 8) Examples: 78 3470 Review Even numbers: ghosteven

  5. Now You Try: Which number IS NOT divisible by 2? 572 1464 249 Need More Practice: Numbers Divisible by 2

  6. WONDERFUL

  7. It ends in a 0, 2, 4, 6, or 8.

  8. Divisibility Rule 3 A number is divisible by three if the sum of the digits is divisible by 3. Examples: 75 7 + 5 = 12 12 ÷ 3 = 4 No Remainder 369 3 +6 + 9 = 18 18 ÷ 3 = 6 No Remainder

  9. Now You Try: Which number IS NOT divisible by 3? 572 1464 279 Need More Practice: Numbers Divisible by 3

  10. The sum is divisible by 3.

  11. WONDERFUL

  12. Divisibility Rule 4 A number is divisible by 4 if the last two digits are divisible by 4. Examples: 1320 20 ÷ 4 = 5 672 72 ÷ 4 = 18

  13. Now You Try: Which number IS NOT divisible by 4? 564 4101 188 Need More Practice: Numbers Divisible by 4

  14. WONDERFUL

  15. The last 2 digits are divisible by 4.

  16. Divisibility Rule 5 A number is divisible by 5 if the last digit is a 0 or 5. Examples: 615 ends in a 5 1480 ends on a 0

  17. Now You Try: Which number IS NOT divisible by 5? 9820 779 560 Need More Practice: Numbers Divisible by 5

  18. The number ends in a zero or a five.

  19. Wonderful

  20. Divisibility Rule 6 A number is divisible by 6 when it is divisible by 2 AND 3. (prime numbers) Examples: 408 ends in an even number (2 rule) sum of the digits is divisible by 3 Review prime and composite numbers:Prime and Composite Numbers

  21. Now You Try: Which number IS NOT divisible by 6? 8700 523 7602 Need more practice? Numbers Divisible by 6

  22. Way To Go!!

  23. This number is divisible by 2 and 3.

  24. Divisibility Rule 9 A number is divisible by 9 if the sum of the digits is divisible by 9. Examples: 963 9 + 6 + 3 = 18 18 ÷ 9 = 2 5445 5 + 4 + 4 + 5 =18 18 ÷ 9 =2

  25. Now You Try: Find the number that IS NOT divisible by 9. 9873 636 5541 Need More Practice: Numbers Divisible by 9 and 10

  26. The sum of the digits is divisible by 9.

  27. Great Job!!!

  28. Divisibility Rule 10 A number is divisible by 10 is it ends in a ZERO. Example: 7630 ends in a zero 410 ends in a zero

  29. Now You Try: Find the number that ISNOT divisibleby ten. 56,920 7537 870

  30. The number ends in a ZERO.

  31. Way To Go!!

  32. Congratulations! Complete two of the three assignments. You may complete them on your computers but print out your answer sheet. Assignment 1.doc chart.doc assignment3.doc

  33. Now that you have completed your two assignments, feel free to go to the following sites. THEY ARE SOOOOO MUCH FUN!!!!!!Fractionsvectorkids -divisibility rulesGamequarium Division Games

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