Factor & Multiples

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Factor & Multiples

  1. 1. 2 is a factor of 10
  2. 2. No remainder left
  3. 3. 10 ÷ 5 = 2 No remainder left
  4. 4. 10 ÷ 3
  5. 5. 10 ÷ 3 No !
  6. 6. 3 is NOT a factor of 10
  7. 7. 10 ÷ 4
  8. 8. 4 is NOT a factor of 10
  9. 9. 10 ÷ 2
  10. 10. 10 ÷ 2 = 5 No remainder left
  11. 11. 5 is a factor of 10
  12. 12. 10 ÷ 5 = 2 10 ÷ 2 = 5
  13. 13. 10 ÷ 1 = 10 10 ÷ 10 = 1
  14. 14. Factors of 10 : 1, 2, 5 and 10
  15. 15. Find all the factors of 14 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1
  16. 16. 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1
  17. 17. Factors of 14 : 1, 2, 7 and 14
  18. 18. 1 x 32 = 32 2 x 16 = 32 4 x 8 = 32
  19. 19. 1 x 32 = 32 2 x 16 = 32 4 x 8 = 32
  20. 20. Factors of 32 : 1, 2, 4, 8, 16, 32.
  21. 21. Factors of 10 : 1, 2, 5, 10 Factors of 14 : 1, 2, 7, 14 Factors of 32 : 1, 2, 4, 8, 16, 32
  22. 22. Factors of 10 : 1 , 2 , 5, 10 Factors of 14 : 1 , 2 , 7, 14 Factors of 32 : 1 , 2 , 4, 8, 16, 32
  23. 23. Common Factors
  24. 24. 1 is a factor of all whole numbers. The number itself is a also a factor.
  25. 25. <ul><li>1 x 5 = 5 </li></ul><ul><li>2 x 5 = 10 </li></ul><ul><li>3 x 5 = 15 </li></ul><ul><li>4 x 5 = 20 </li></ul><ul><li>5 x 5 = 25 </li></ul><ul><li>6 x 5 = 30 </li></ul><ul><li>7 x 5 = 35 </li></ul><ul><li>8 x 5 = 40 </li></ul><ul><li>9 x 5 = 45 </li></ul><ul><li>10 x 5 = 50 </li></ul><ul><li>11 x 5 = 55 </li></ul><ul><li>12 x 5 = 60 </li></ul>
  26. 26. <ul><li>1 x 5 = 5 </li></ul><ul><li>2 x 5 = 10 </li></ul><ul><li>3 x 5 = 15 </li></ul><ul><li>4 x 5 = 20 </li></ul><ul><li>5 x 5 = 25 </li></ul><ul><li>6 x 5 = 30 </li></ul><ul><li>7 x 5 = 35 </li></ul><ul><li>8 x 5 = 40 </li></ul><ul><li>9 x 5 = 45 </li></ul><ul><li>10 x 5 = 50 </li></ul><ul><li>11 x 5 = 55 </li></ul><ul><li>12 x 5 = 60 </li></ul>
  27. 27. 5, 10, 15, 20, 25… Multiples of 5
  28. 28. Multiples of 3 : 3, 6, 9, 12, 15 Multiples of 6 : 6, 12, 18, 24, 30
  29. 29. Multiples of 3 : 3, 6 , 9, 12 , 15, 18 Multiples of 6 : 6 , 12 , 18 , 24, 30
  30. 30. Common Multiples
  31. 31. What’s my Number ?
  32. 32. Rules of the Game <ul><li>1. Work in pairs. </li></ul><ul><li>2. Think of a number between 1 and 30 </li></ul><ul><li>3. Tell your partner all the factors of that number but NOT the number itself. </li></ul><ul><li>4. Ask your partner to guess the number. He gets a point if he guesses the correct number within 2 tries. If not, you get the point. </li></ul>
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