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What Are You Learning?  I CAN convert improper fractions into mixed numbers.  I CAN add fractions.  I CAN add mixed numbers. 2

Why Do You Need To Know This?  Adding fractions is important because many real-world situations deal with fractions. 3

Vocabulary  Improper Fraction: An improper fraction is a fraction with a numerator that is greater than or equal to the denominator.  Mixed Number: A mixed number is the sum of a whole number and a fraction. 4

Changing Improper Fractions into Mixed Numbers 1. Divide to see how many times the denominator will go into the numerator. 2. Multiply denominator by the whole number. 3. Subtract answer from numerator and this becomes new numerator. 4. Keep the same denominator. 5

Change each improper fraction to a mixed number. 6 a. 45/10 b. 15/2 c. 9/7 d. 15/8 e. 100/3 f. 28/5 g. 19/8 h. 17/10

Vocabulary Like fractions Fractions that have the same denominator. 7

Adding Like Fractions  To add like fractions, add the numerators and keep the same denominator. Simplify if needed. a. 5/9 + 2/9 b. 7/12 + 4/12 8

Vocabulary Unlike fraction Fractions that have different denominators. 9

Adding Unlike Fractions  Find the least common denominator.  Change the numerators.  Add the numerators and keep the denominator.  Simplify.  7/8 + ¾  5/6 + 4/9 10

11 Add. Write in simplest form. a. 7 4/ /9 b. 6 1/ /8 c. 7 ¾ + 2 2/3 d. 6 1/ /6

12 Add. Write in simplest form. a. 1 5/ /6 b. 3 1/ /12

Word Problem  First-class postage in the United States costs $0.33 for 1 oz. Your letter weighs ¾ oz.  Do you need extra postage to include a newspaper clipping that weighs 3/8 oz? Explain. 13

Word Problem  There were three snowstorms last winter. The storms dropped 3 ½ in., 6 ½ in., and 10 ¾ in. of snow.  What was the combined snowfall of the three storms? 14