1 / 43

DIVISION OF FRACTIONS

DIVISION OF FRACTIONS. Means. ?. How many . can cover. Lesson Objectives: . To understand concept of division of fractions. To learn how to divide fractions. To Divide Fractions Just F LIP IT!!!. DOUBLE CLICK TO START THEN ONE MORE CLICK WHEN 
LETTERING APPEARS.

noam
Download Presentation

DIVISION OF FRACTIONS

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. DIVISION OF FRACTIONS Means ? How many can cover

  2. Lesson Objectives: To understand concept of division of fractions To learn how to divide fractions

  3. To Divide Fractions Just FLIP IT!!! DOUBLE CLICK TO START THEN ONE MORE CLICK WHEN 
LETTERING APPEARS Video provided by:http://www.teachertube.com/members/
viewVideo.php?
video_id=81294&title=Math_Rocks__Dividing_Fractions_FLIP_IT

  4. Click on each 
number to see the 
order in which to 
divide fractions. Pull Pull

  5. 1 2 1 4 = A division equation asks the question........ 1 2 1 4 ? How many 's in Move the 1/4 fraction strip to see how 

many it takes to cover the 1/2 bar. 1/2 1/4 1/4 1/4

  6. HOW MANY 1/4'S ARE IN ONE-HALF? 1 2 1 4 = 2 To divide by a fraction, multiply by its reciprocal. Exchanging the numerator and denominator of a fraction forms its reciprocal 4 2 = 1 2 4 1 = X 2 There are2 fourths in one-half. 1/2 1/4 1/4

  7. HOW MANY 1/8'S ARE IN ONE-HALF? 1 2 1 8 = ? Multiply by the reciprocal of the divisor. 8 2 1 2 8 1 = = X 4 ? There are____ eighths in one-half. 1/8 1/2

  8. HOW MANY 1/8'S ARE IN THREE-FOURTHS? 3 4 1 8 = ? Multiply by the reciprocal of the divisor. 24 4 = ? 3 4 8 1 = X 6 There areeighths in three-fourths. 1/8 1/4 1/4 1/4

  9. HOW MANY 3/16'S ARE IN THREE-FOURTHS? 3 16 3 4 = ? Multiply by the reciprocal of the divisor. 48 12 = 3 4 16 3 = X ? 4 There are 3/16 in three-fourths. 1/4 1/4 1/4 1/16 1/16 1/16

  10. REMEMBER!!! When a whole number 
is in the problem, you 
must make it the 
numerator and a 1 
becomes the 
denominator!!! Pull tab for examples!

  11. To divide by a fraction, multiply by its reciprocal. Exchanging the numerator and denominator of a fraction forms its reciprocal You don't believe this little trick? Let me prove it to you! 4 = 2 is the same as 4 x 1 2 = Try another one - use any numbers - it always works!

  12. A piece of pie is better than no pie at all! Dividing Fractions Multiply by the reciprocal (Invert the divisor and multiply) 1.)  2 3 2 = http://exchange.smarttech.com/search.html?q=dividing+fractions

  13. Fraction Bars 1 1/8 1/4 1/16 1/2

  14. A piece of pie is better than no pie at all! Dividing Fractions Multiply by the reciprocal (Invert the divisor and multiply) 1.) 7 1 8 6 = http://exchange.smarttech.com/search.html?q=dividing+fractions

  15. A piece of pie is better than no pie at all! Dividing Fractions Multiply by the reciprocal (Invert the divisor and multiply) 1.) 3 1 7 4 = http://exchange.smarttech.com/search.html?q=dividing+fractions

  16. A piece of pie is better than no pie at all! Dividing Fractions Multiply by the reciprocal (Invert the divisor and multiply) 1.) 1 5 2 6 = http://exchange.smarttech.com/search.html?q=dividing+fractions

  17. http://www.youtube.com/watch?v=TtQ5OlfBGtI

  18. "the flip of a fraction" reciprocal of reciprocal of 3 =

  19. practice 5-9 Grade: «grade» «subject» Subject: «date» Date:

  20. 1

  21. 2

  22. 3

  23. 4

  24. 5

  25. 6

  26. 7

  27. 8

  28. 9

  29. 10

  30. 11

  31. 12

  32. 13

  33. 14

  34. 15

  35. 16

  36. 05-09.ppt

  37. 3 Problems to solve: 2 Things you learned. 1 Question you still have.

  38. Attachments 05-09.ppt

More Related