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Compare Fractions
 

Compare Fractions

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Learn how to compare fractions!

Learn how to compare fractions!

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    Compare Fractions Compare Fractions Presentation Transcript

    • Compare Fractions Mrs. Young EMC 1
    • HOW TO COMPARE FRACTIONS
      • Vocabulary:
      • common denominator
      • least common denominator
      • like fractions
      • unlike fractions.
    • Compare Fractions with common denominators The fractions 2 / 4 and 3 / 4 have the same denominator. Fractions with the same denominators are like fractions .
    • Compare Fractions with common denominators If denominators are the same , the fraction with the larger numerator is larger. So 3 / 4 is larger than 2 / 4 .
    • Compare Fractions with common denominators 9 / 16 and 7 / 16 are like fractions . The numerator 9 in 9 / 16 is larger than the numerator 7 in 7 / 16 , making 9 / 16 larger than 7 / 16 .
    • Compare Unlike Fractions The fractions 3 / 4 and 5 / 8 have unlike denominators and unlike numerators. Fractions that have unlike denominators are unlike fractions .
    • Compare Unlike Fractions To compare 3 / 4 and 5 / 8 , rename one or both fractions with like denominators making them like fractions . Then compare the numerators. In this case, 3 / 4 is renamed as 6 / 8 so that we can compare the numerator of 6 / 8 and 5 / 8 .
    • Compare Unlike Fractions: Step 1
      • To compare 3 / 4 and 5 / 8 , rename one or both fractions with like denominators making them like fractions .
      • In order to do this, you must find the least common denominator .
        • You will have to be able to use your skills of find the least common multiple in order to do this.
          • The least common multiple of 4 and 8 is 8.
            • This means that we will rename (or find equivalent fractions) using 8 as the denominator.
    • Step 1 continued
      • Write equivalent fractions for 3 / 4 and 5 / 8 using 8 as the denominator.
      • 3 / 4 = 6 / 8
      • 5 / 8 = 5 / 8
    • Step 2:
      • Compare the fractions
      • 3 / 4 = 6 / 8
      • 5 / 8 = 5 / 8
      • 6 / 8 > 5 / 8 , which means that 3 / 4 > 5 / 8
    • Compare Unlike Fractions: Step 1
      • To compare 5 / 7 and 3 / 5 , rename one or both fractions with like denominators making them like fractions .
      • In order to do this, you must find the least common denominator .
        • You will have to be able to use your skills of find the least common multiple in order to do this.
          • The least common multiple of 7 and 5 is 35.
            • This means that we will rename (or find equivalent fractions) using 35 as the denominator.
    • Step 1 continued
      • Write equivalent fractions for 5 / 7 and 3 / 5 using 35 as the denominator.
      • 5 / 7 = 25 / 35
      • 3 / 5 = 21 / 35
    • Step 2:
      • Compare the fractions
      • 5 / 7 = 25 / 35
      • 3 / 5 = 21 / 35
      • 25 / 35 > 21 / 35, which means that 5 / 7 > 3 / 5
    • Compare Unlike Fractions: Step 1
      • To compare 6 / 9 and 1 / 2 , rename one or both fractions with like denominators making them like fractions .
      • In order to do this, you must find the least common denominator .
        • You will have to be able to use your skills of find the least common multiple in order to do this.
          • The least common multiple of 9 and 2 is 18.
            • This means that we will rename (or find equivalent fractions) using 18 as the denominator.
    • Step 1 continued
      • Write equivalent fractions for 6 / 9 and 1 / 2 using 18 as the denominator.
      • 6 / 9 = 12 / 18
      • 1 / 2 = 9 / 18
    • Step 2:
      • Compare the fractions
      • 6 / 9 = 12 / 18
      • 1 / 2 = 9 / 18
      • 12 / 18 > 9 / 18, which means that 6 / 9 > 1 / 2
    • Compare the fractions
      • 8 / 9 and 5 / 9
      • 5 / 6 and 7 / 10
      • 3 / 6 and 9 / 11