1 / 19

Bellringer

Bellringer. 16/24 & 21/24. Make the two fractions equivalent fractions : 2/3 & 7/8 5/9 & 1/3. 5/9 & 3/9. 3-2, 3-3 Adding and Subtracting FRACTIONS!!!!. . + & - Fractions – Big Rocks. Get common denominators Get equivalent fractions Combine numerators Keep same denominator

matia
Download Presentation

Bellringer

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. Bellringer 16/24 & 21/24 Make the two fractions equivalent fractions : 2/3 & 7/8 5/9 & 1/3 5/9 & 3/9

  2. 3-2, 3-3Adding and SubtractingFRACTIONS!!!! .

  3. + & - Fractions – Big Rocks Get common denominators Get equivalent fractions Combine numerators Keep same denominator Simplify if needed

  4. First of all, you need a “common denominator”. This means the bottom numbers of each fraction must be the same. How do you ADD FRACTIONS?

  5. ¾ + ¼ ½ + 5/8 3/16 + 5/16 1 ½ + 3 ½ 10 3/16 + 3 5/8 15/16 + 3 3/8 2 7/8 + 2 3/8 YES NO YES YES NO NO YES Can These Be Added As Is (Do they have a common denominator)?

  6. Step 1 - Making a CommonDenominator ½ + 1/4 Cannot be added together... Yet. The common denominator is 4 2 | 2 4 1 2 2 x 1 x 2 = 4

  7. Step #2 - Converting the Fraction to Equivalent Fractions ½ + 1/4 ½ = ?/4 =2/4

  8. Step 3 - Combine the Fraction 2/4 + ¼ = Combine only the numerators … 2 + 1 = 3

  9. Step 4 – Keep numerator the same 2/4 + ¼ = Keep the denominator the same …. 4 2/4 + 1/4 = 3/4 THE ANSWER!!!

  10. Step 5 – Simplify if needed • So… 2/4 + 1/4 = 3/4 THE ANSWER!!! • Can you simplify ¾????????? • NO

  11. 1 + 3/16 1 - 1/8 1 - 9/16 1 - ½ 1 + ¾ 1 - 5/8 16/16 8/8 16/16 2/2 4/4 8/8 What fraction would you turn 1 into to complete the problem?

  12. 1 + 3/16 1 - 1/8 1 - 9/16 1 - ½ 1 + ¾ 1 - 5/8 16/16 8/8 16/16 2/2 4/4 8/8 Solve the problem!!! NOW!!!!  16/16 + 3/16 = 19/16 = 1 3/16 8/8 – 1/8 = 7/8 16/16 - 9/16 = 7/16 2/2 – ½ = 1/2 4/4 + ¾ = 7/4 = 1 3/4 8/8 – 5/8 = 3/8

  13. Add fractions then whole numbers 7 ¼ + 4 3/8 = 7 1 4 7 2 8 + 4 3 8 + 4 3 8 11 5 8

  14. What is the common denominator? 3 ¼ - 15/16 = 16 3 1 4 3 4 16 - 15 16 - 15 16

  15. Can’t subtract 4/16 from 15/16 • You need to borrow! 3 ¼ - 15/16 = 3 4 16 2 4 16 16 16 20 16 + = - 15 16 - 15 16

  16. Subtract fractions then whole numbers 3 ¼ - 15/16 = 2 20 16 - 15 16 2 5 . 16

  17. Make common denominators, then add fractions. Then whole numbers. 4 ½ + 2 7/8 = 4 1 2 4 4 8 + 2 7 8 + 2 7 8 6 11 8

  18. If improper fraction change to a mixed number 4 ½ + 2 7/8 = 4 4 8 11 8 3 8 = 1 + 2 7 8 Add the mixed number to the whole number. 6 11 8 6 3 8 3 8 + 1 = 7

  19. Homework Practice sheet 3-3 #2-18 evens show work #19-22 e.c. show work Will grade pg 132 #10-22 even (show work/steps even though you can use calculator for #14-22) .

More Related