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Divisibility rules
- 1. 2, 3, 4, 5, 6, 9, 10
- 2. 奈庄厩庄壊庄恢鉛艶 BY What does it mean?
- 3. 奈庄厩庄壊庄恢鉛艶 by means: If you divide one number by another, the result is a whole number WITHOUT a remainder. Examples: 12 歎 6 = 2 No remainder 15 歎 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: 78 347 0 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 歎 3 = 4 No Remainder 369 3 +6 + 9 = 18 18 歎 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 歎 4 = 5 672 72 歎 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 6when it is divisible by A number is divisible by 6 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 歎 9 = 2 5445 5 + 4 + 4 + 5 =18 18 歎 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 IS NOT divisible by 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. CONGRATULATIONS ON HAVING ACHIEVED THIS AIM.