• 1. Review: Improper Fractions, Mixed Numbers,
  Equivalent Fractions, Discuss HW
• 2. Reducing Fractions
• 3. Comparing Fractions
• 4. Finding the Lowest Common Denominator
• 5. Setting Up Fractions and Reducing (Word
  Problems)

• NO CLASS MONDAY. I am going to a conference
  in Kent. Lucky me.
• Change to a mixed number.



• Change to an improper fraction.

• Raise to higher terms.
• Summary: Reducing changes the numbers in
   a fraction, but it does not change the VALUE
   of a fraction.

                        Example: Reduce
To reduce a fraction,
you divide both the     •Step 1: Divide
numerator and           both 14 and 16
denominator by a
                        by a number
number that goes
into them both          that goes evenly
evenly.                 into both of
                        them.
• Summary: Reducing changes the numbers in
   a fraction, but it does not change the VALUE
   of a fraction.
•Step 1: Divide    Example: Reduce
both 30 and 45
by a number
that goes evenly
into both of
them.
• Measurement problems often require you to write
  one amount as a fraction of a larger unit.

• This will require you to know how to set up
  fractions and reduce to lowest terms.

 What fraction of a yard is 32 inches, if one
 yard equals 36 inches?


  • What is the part? 32

  • What is the whole? 36
• Summary: To compare fractions, you must have the
   same denominators. Raise each fraction to higher
   terms, then the new compare numerators.

Example: Which fraction is bigger,
•Step 1: Find a
common denominator          ×7    21
for 5 and 7 and raise to                       7
higher terms.               ×7             5) 35
•Step 2: Look at the
numerators and
decide which one is
                             ×5   25         5
                             ×5          7) 35
bigger.
• You will need to know how to set up fractions
    and reduce them.
Example: John makes $800 a month. He pays $200 a
month to rent a room. What fraction of his income does
John pay for rent?
• Step 1: Find the whole.
  Write it in the denominator.

• Step 2: Find the part. Write
  it in the numerator.

• Step 3: Reduce.
Example: Frank bought a 100-pound bag of cement. He
used 20 pounds of cement to fix the steps at the back of
his house. What part of the cement was left?
• Step 1: Find the whole.
                                             100-30=70
  Write it in the denominator.

• Step 2: Find the part. The
  part that is left of the cement.

• Step 3: Reduce.
Example: Gordon’s baseball team won 12 games and lost
6 last season. What fraction of the games did they win?


• Step 1: Find the whole.
  (wins+losses=total games)
  Write it in the denominator.          12+6=18
• Step 2: Find the part. The
  part they won is given in the
  problem.

• Step 3: Reduce.

11:00 ABE Math 4/19

  • 1.
    • 1. Review:Improper Fractions, Mixed Numbers, Equivalent Fractions, Discuss HW • 2. Reducing Fractions • 3. Comparing Fractions • 4. Finding the Lowest Common Denominator • 5. Setting Up Fractions and Reducing (Word Problems) • NO CLASS MONDAY. I am going to a conference in Kent. Lucky me.
  • 2.
    • Change toa mixed number. • Change to an improper fraction. • Raise to higher terms.
  • 3.
    • Summary: Reducingchanges the numbers in a fraction, but it does not change the VALUE of a fraction. Example: Reduce To reduce a fraction, you divide both the •Step 1: Divide numerator and both 14 and 16 denominator by a by a number number that goes into them both that goes evenly evenly. into both of them.
  • 4.
    • Summary: Reducingchanges the numbers in a fraction, but it does not change the VALUE of a fraction. •Step 1: Divide Example: Reduce both 30 and 45 by a number that goes evenly into both of them.
  • 5.
    • Measurement problemsoften require you to write one amount as a fraction of a larger unit. • This will require you to know how to set up fractions and reduce to lowest terms. What fraction of a yard is 32 inches, if one yard equals 36 inches? • What is the part? 32 • What is the whole? 36
  • 7.
    • Summary: Tocompare fractions, you must have the same denominators. Raise each fraction to higher terms, then the new compare numerators. Example: Which fraction is bigger, •Step 1: Find a common denominator ×7 21 for 5 and 7 and raise to 7 higher terms. ×7 5) 35 •Step 2: Look at the numerators and decide which one is ×5 25 5 ×5 7) 35 bigger.
  • 8.
    • You willneed to know how to set up fractions and reduce them. Example: John makes $800 a month. He pays $200 a month to rent a room. What fraction of his income does John pay for rent? • Step 1: Find the whole. Write it in the denominator. • Step 2: Find the part. Write it in the numerator. • Step 3: Reduce.
  • 9.
    Example: Frank boughta 100-pound bag of cement. He used 20 pounds of cement to fix the steps at the back of his house. What part of the cement was left? • Step 1: Find the whole. 100-30=70 Write it in the denominator. • Step 2: Find the part. The part that is left of the cement. • Step 3: Reduce.
  • 10.
    Example: Gordon’s baseballteam won 12 games and lost 6 last season. What fraction of the games did they win? • Step 1: Find the whole. (wins+losses=total games) Write it in the denominator. 12+6=18 • Step 2: Find the part. The part they won is given in the problem. • Step 3: Reduce.