7-1 Factors and Divisibilty

1,280 views

Published on

0 Comments
3 Likes
Statistics
Notes
  • Be the first to comment

No Downloads
Views
Total views
1,280
On SlideShare
0
From Embeds
0
Number of Embeds
3
Actions
Shares
0
Downloads
93
Comments
0
Likes
3
Embeds 0
No embeds

No notes for slide














































































































































































  • 7-1 Factors and Divisibilty

    1. 1. 7-1 Rules of Divisibility Math Notes Number Sense 4.1
    2. 2. Divisible by: Rule 1 All numbers are divisible by 1
    3. 3. Divisible by: Rule 1 All numbers are divisible by 1 2 The last digit of the number is even or 0
    4. 4. 54 8 90
    5. 5. 54 8 90 All even numbers.
    6. 6. 27 4 2 54 28 45 2 90 All even numbers.
    7. 7. 27 4 2 54 28 45 2 90 54, 90, 8 are All even numbers. divisible by 2.
    8. 8. Divisible by: Rule 1 All numbers are divisible by 1 2 The last digit of the number is even or 0 3 The sum of the digits is divisible by 3
    9. 9. 37
    10. 10. 3+7
    11. 11. 3 + 7 = 10
    12. 12. 3 +7= 10
    13. 13. 3 r1 3 +7= 3 10 9 1
    14. 14. 3 r1 3 +7= 3 10 9 37 is NOT 1 divisible by 3
    15. 15. 69
    16. 16. 6+9
    17. 17. 6 + 9 = 15
    18. 18. 6 +9= 15
    19. 19. 5 6 +9= 3 15 15 0
    20. 20. 5 6 +9= 3 15 15 69 is 0 divisible by 3
    21. 21. Divisible by: Rule 1 All numbers are divisible by 1 2 The last digit of the number is even or 0 3 The sum of the digits is divisible by 3 4 The last two digits form a number divisible by 4
    22. 22. 4 29324
    23. 23. 7331 4 29324 28 13 12 12 12 04 4
    24. 24. 7331 4 29324 OR 28 13 12 12 12 04 4
    25. 25. 4 29324
    26. 26. 4 29324
    27. 27. 4 24
    28. 28. 6 4 24 24 0
    29. 29. Divisible by: Rule 1 All numbers are divisible by 1 2 The last digit of the number is even or 0 3 The sum of the digits is divisible by 3 4 The last two digits form a number divisible by 4 5 The last digit is a 5 or 0
    30. 30. 45 25 70
    31. 31. 45 25 70 All numbers ending in 5 or 0.
    32. 32. 9 5 5 45 5 25 14 5 70 All numbers ending in 5 or 0.
    33. 33. 9 5 5 45 5 25 14 5 70 All numbers ending 45, 70, 25 are in 5 or 0. divisible by 5.
    34. 34. Divisible by: Rule 1 All numbers are divisible by 1 2 The last digit of the number is even or 0 3 The sum of the digits is divisible by 3 4 The last two digits form a number divisible by 4 5 The last digit is a 5 or 0 6 The number is divisible by both 3 AND 2
    35. 35. If divisible by 2 AND 3, 18 is divisible by 6.
    36. 36. 18 If divisible by 2 AND 3, 18 is divisible by 6.
    37. 37. 9 2 18 If divisible by 2 AND 3, 18 is divisible by 6.
    38. 38. 9 2 18 18 If divisible by 2 AND 3, 18 is divisible by 6.
    39. 39. 9 2 18 1+8 If divisible by 2 AND 3, 18 is divisible by 6.
    40. 40. 9 2 18 1+8 = 9 If divisible by 2 AND 3, 18 is divisible by 6.
    41. 41. 9 2 18 1+8 = 9 If divisible by 2 AND 3, 18 is divisible by 6.
    42. 42. 9 2 18 3 1+8 = 3 9 9 If divisible by 2 AND 3, 18 is divisible by 6. 0
    43. 43. Divisible by: Rule 1 All numbers are divisible by 1 2 The last digit of the number is even or 0 3 The sum of the digits is divisible by 3 4 The last two digits form a number divisible by 4 5 The last digit is a 5 or 0 6 The number is divisible by both 3 AND 2 8 The last three digits form a number divisible by 8
    44. 44. 8 25272
    45. 45. 3 1 59 8 25272 24 12 8 47 40 72 72
    46. 46. 3 1 59 8 25272 OR 24 12 8 47 40 72 72
    47. 47. 8 25272
    48. 48. 8 25272
    49. 49. 8 272
    50. 50. 34 8 272 24 32 32
    51. 51. Divisible by: Rule 1 All numbers are divisible by 1 2 The last digit of the number is even or 0 3 The sum of the digits is divisible by 3 4 The last two digits form a number divisible by 4 5 The last digit is a 5 or 0 6 The number is divisible by both 3 AND 2 8 The last three digits form a number divisible by 8 9 The sum of the digits is divisible by 9
    52. 52. 56
    53. 53. 5+6
    54. 54. 5 + 6 = 11
    55. 55. 5 +6= 11
    56. 56. 1 r2 5 +6= 9 11 9 2
    57. 57. 1 r2 5 +6= 9 11 9 56 is NOT 2 divisible by 9
    58. 58. 99
    59. 59. 9+9
    60. 60. 9 + 9 = 18
    61. 61. 9 +9= 18
    62. 62. 2 9 +9= 9 18 18 0
    63. 63. 2 9 + 9 = 9 18 18 99 is divisible 0 by 9
    64. 64. Divisible by: Rule 1 All numbers are divisible by 1 2 The last digit of the number is even or 0 3 The sum of the digits is divisible by 3 4 The last two digits form a number divisible by 4 5 The last digit is a 5 or 0 6 The number is divisible by both 3 AND 2 8 The last three digits form a number divisible by 8 9 The sum of the digits is divisible by 9 10 The number ends in 0
    65. 65. 70 20 90
    66. 66. 70 20 90 All even numbers.
    67. 67. 27 4 2 70 2 20 45 2 90 All even numbers.
    68. 68. 27 4 2 70 2 20 45 2 90 54, 90, 8 are All even numbers. divisible by 2.

    ×