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Adding & subtracting Mixed numbers 5-8

Adding & subtracting Mixed numbers 5-8. Finley math 6 th grade. Table of contents. Mixed and Improper Guided Practice pg 71 Mixed and Improper Fractions Pg 72-74 Do now 11/7/11 pg 75 Adding & subtracting like fractions pg 76 Guided practice pg 77

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Adding & subtracting Mixed numbers 5-8

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  1. Adding & subtracting Mixed numbers 5-8 Finley math 6th grade

  2. Table of contents Mixed and Improper Guided Practice pg 71 Mixed and Improper Fractions Pg 72-74 Do now 11/7/11 pg 75 Adding & subtracting like fractions pg 76 Guided practice pg 77 Adding & subtracting unlike fractions pg 78 -80 Do now 11/9/11 pg 81 Adding & subtracting mixed numbers pg 82 Guided/Independent practice pg 83 Renaming to subtract mixed numbers pg 84 Do now 11/14/11 pg 85

  3. Adding & subtracting mixed numbers pg 82 • How do you find the sum or difference when adding or subtracting mixed numbers? • First check to see if you have like fractions. • If you have unlike fractions find their LCM and change them into like fractions.

  4. Adding & subtracting mixed numberspg 82 Example 1: Find each sum or difference. Write the answer in simplest form.

  5. Adding & subtracting mixed numberspg 82 Example 2: Find each sum or difference. Write the answer is simplest form. What is the LCM or LCD? 18 is the LCM or LCD What are the new fractions going to be?

  6. Adding & subtracting Mixed numberspg 82 • Example 3: Find each sum or difference. What is the LCD? The LCD is 12 What are the new fractions?

  7. Independent Practice pg 83 1. 2. 3. 1. 2. 3.

  8. Do now 11/14/11 pg 85 Add or Subtract 1. 2. 3. 4. Answers 1. 5 2. 3. 4.

  9. Renaming to subtract mixed numberspg 84 Why do we rename fractions? We rename fractions so when you subtract two mixed numbers which have numerators where the first is smaller than the second.

  10. Renaming fractions pg 84 • Subtract. Write each answer in simplest from. Rename as Subtract the fractions and then the whole numbers.

  11. Renaming fractions pg 84 • Example 2: Rename as What is the LCM of 3&6? 6 is the LCM, so what are the new fractions?

  12. Renaming Fractions pg 84 Subtract and write in simples form. • Find the LCM of 3&4 • Change the fractions to like fractions • Rename • Subtract the fractions • Subtract the whole numbers

  13. Independent practice pg 87 1. 2. 3. 4. 5. Mr. Jones purchased a 4-pound bag of flour. He used lbs. of flour to make bread. How many lbs are left?

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