1 / 11

EXAMPLE 1

1. 1. Kate spent of her day playing softball and of her day playing soccer. 12. 8. To answer the real-world question above, find the sum. 1. 1. +. 8. 12. 3. 3. 1. =. 24. 8. 3. 2. 1. 2. +. +. =. 24. 12. 2. 5. 5.

zarifa
Download Presentation

EXAMPLE 1

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. 1 1 Kate spent of her day playing softball and of her day playing soccer. 12 8 To answer the real-world question above, find the sum 1 1 + 8 12 3 3 1 = 24 8 3 2 1 2 + + = 24 12 2 5 5 Kate spent of her day playing sports. 24 24 ANSWER EXAMPLE 1 Adding Fractions Rewrite both fractions using the LCD,24. Add the fractions.

  2. 3 5 . Find the sum + 8 4 5 5 = 8 8 3 2 3 6 + + = Rewrite using the LCD, 8. 8 4 4 2 11 3 1 , or 8 8 EXAMPLE 2 Rewriting Sums of Fractions Add the fractions.

  3. 2 7 1 1 3 4 1 5 1. 3. 2. 4. + + + + 5 6 3 3 10 9 2 4 = = = 4 11 1 9 1 1 20 6 = 8 1 15 GUIDED PRACTICE EXAMPLE 3 for Examples 1 and 2 Comparing Decimals Find the sum. Simplify if possible.

  4. 29 Kate spent of her day in class or studying. 40 GUIDED PRACTICE EXAMPLE 3 for Examples 1 and 2 Comparing Decimals 5.WHAT IF? Suppose you wanted to know the fraction of Kate’s day that was spent in class or studying. Find the fraction. ANSWER

  5. 4 2 5 3 EXAMPLE 3 Subtracting Fractions RAINFALL Last week, inch of rain fell on Monday and inch fell on Tuesday. How much more rain fell on Tuesday than on Monday?

  6. 2 4 You need to find the difference of and 3 5 4 3 12 = 5 3 15 2 5 10 – – = 3 5 15 2 15 2 On Tuesday inch more rain fell than on Monday. 15 EXAMPLE 3 Subtracting Fractions SOLUTION Rewrite both fractions using the LCD, 15 Subtract the fractions. ANSWER

  7. 5 7 3 1 6. 7. – – 6 4 4 = = 5 5 = = 8 8 8 1 8 1 4 12 15 8. – 2 9 5 3 9. – 6 10 for Example 3 GUIDED PRACTICE

  8. 2 Racing: One lap of Speedway A is mile. One lap of Speedway B is mile. How much longer is one lap of Speedway B? 10. 5 3 4 ANSWER 7 One lap of Speedway B is of a mile longer. 20 for Example 3 GUIDED PRACTICE

  9. SOLUTION 3 You need to find the total amount of time, so add 5 3 and . 10 STEP1 STEP 2 STEP 3 Combine to find the sum. Draw models to Redraw the models to divide them the same way. represent the problem. + + = = EXAMPLE 4 Standardized Test Practice

  10. 9 The total amount of time of your workout is hour. 10 So, the correct answer is C. EXAMPLE 4 Standardized Test Practice ANSWER

  11. 1 3 1 5 for Example 4 GUIDED PRACTICE 11. WHAT IF? You ride an exercise bike for hour and do abdominal exercises for hour. Draw a model that represents your workout time. ANSWER

More Related