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5-1 Mental Math: Patterns in Multiplication

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5-1 Mental Math: Patterns in Multiplication

  1. 1. 5-1 Mental Math: Patterns in Division Math Notes Number Sense 1.0
  2. 2. What you’re learning today...
  3. 3. What you’re learning today... Number Sense 1.0 - Computing with positive integers.
  4. 4. What you’re learning today... Number Sense 1.0 - Computing with positive integers. Definitions of dividend, divisor, and quotient.
  5. 5. What you’re learning today... Number Sense 1.0 - Computing with positive integers. Definitions of dividend, divisor, and quotient. 12 ÷ 3 = 4
  6. 6. What you’re learning today... Number Sense 1.0 - Computing with positive integers. Definitions of dividend, divisor, and quotient. 12 ÷ 3 = 4 54 ÷ 6 = 9
  7. 7. What you’re learning today... Number Sense 1.0 - Computing with positive integers. Definitions of dividend, divisor, and quotient. 12 ÷ 3 = 4 54 ÷ 6 = 9 3,000 ÷ 5 = 600
  8. 8. Division Review 12 ÷ 3 = 4
  9. 9. Division Review 12 ÷ 3 = 4 12 is the dividend, the number being divided.
  10. 10. Division Review 3 is the divisor, the number that divides into the dividend 12 ÷ 3 = 4 12 is the dividend, the number being divided.
  11. 11. Division Review 3 is the divisor, the number that divides into the dividend 12 ÷ 3 = 4 4 is the quotient, the 12 is the dividend, the result of dividing the number being divided. dividend by the divisor.
  12. 12. Division Review 12 ÷ 3 = 4
  13. 13. Division Review 12 ÷ 3 = 4
  14. 14. Division Review 3=4 12
  15. 15. Division Review The dividend goes inside the division bracket. 3=4 12
  16. 16. Division Review The dividend goes inside the division bracket. 4 3 12
  17. 17. Division Review The divisor goes outside the division bracket. The dividend goes inside the division bracket. 4 3 12
  18. 18. Division Review The divisor goes outside the division bracket. The dividend goes inside the division bracket. 4 3 12
  19. 19. Division Review The divisor goes outside the division bracket. The dividend goes The quotient goes inside the division above the division bracket. 4 bracket. 3 12
  20. 20. Example 1 160 ÷ 8 = n
  21. 21. Example 1 160 ÷ 8 = n
  22. 22. Example 1 160 ÷ 8 = n
  23. 23. Example 1 Think 16 ÷ 8 160 ÷ 8 = n
  24. 24. Example 1 Think 16 ÷ 8 160 ÷ 8 = n 16 ÷ 8 = 2
  25. 25. Example 1 Think 16 ÷ 8 160 ÷ 8 = n 16 ÷ 8 = 2 160 ÷ 8 = 20
  26. 26. Example 1 Think 16 ÷ 8 160 ÷ 8 = n 16 ÷ 8 = 2 160 ÷ 8 = 20 16 tens
  27. 27. Example 1 Think 16 ÷ 8 160 ÷ 8 = n 16 ÷ 8 = 2 160 ÷ 8 = 20 16 tens 2 tens
  28. 28. Example 2 30 ÷ 5 = 6 30 ÷ 5 = 6 30 ÷5=6
  29. 29. Example 2 30 ÷ 5 = 6 300 ÷ 5 = 6 30 ÷5=6
  30. 30. Example 2 30 ÷ 5 = 6 300 ÷ 5 = 60 30 ÷5=6
  31. 31. Example 2 30 ÷ 5 = 6 300 ÷ 5 = 60 3000 ÷ 5 = 6
  32. 32. Example 2 30 ÷ 5 = 6 300 ÷ 5 = 60 3000 ÷ 5 = 600
  33. 33. Example 2 60 ÷ 30 = 2 60 ÷ 30 = 2 60 ÷ 30 = 2
  34. 34. Example 2 60 ÷ 30 = 2 600 ÷ 30 = 2 60 ÷ 30 = 2
  35. 35. Example 2 60 ÷ 30 = 2 600 ÷ 30 = 20 60 ÷ 30 = 2
  36. 36. Example 2 60 ÷ 30 = 2 600 ÷ 30 = 20 6000 ÷ 30 = 2
  37. 37. Example 2 60 ÷ 30 = 2 600 ÷ 30 = 20 6000 ÷ 30 = 200
  38. 38. Example 3 140 ÷ 2
  39. 39. Example 3 Think 14 ÷ 2 = 7 140 ÷ 2
  40. 40. Example 3 Think 14 ÷ 2 = 7 140 ÷ 2 = 7
  41. 41. Example 3 Think 14 ÷ 2 = 7 140 ÷ 2 = 7 Don’t forget that 0
  42. 42. Example 3 Think 14 ÷ 2 = 7 140 ÷ 2 = 70 Don’t forget that 0
  43. 43. Example 4 32,000 ÷ 8
  44. 44. Example 4 Think 32 ÷ 8 = 4 32,000 ÷ 8
  45. 45. Example 4 Think 32 ÷ 8 = 4 32,000 ÷ 8 = 4
  46. 46. Example 4 Think 32 ÷ 8 = 4 32,000 ÷ 8 = 4 Don’t forget those 000’s
  47. 47. Example 4 Think 32 ÷ 8 = 4 32,000 ÷ 8 = 4000 Don’t forget those 000’s

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