#### Fractions - Multiplying Fractions

You’ll be glad to know multiplying fractions do not require the same denominators. However, you’ll get the opportunity to practice your knowledge of multiplication facts.

Other Skills Needed:

Converting improper fractions to mix numbers

Converting mixed numbers to improper fractions

Reducing fractions

1) Multiply the numerators

2) Multiply the denominators

3) If necessary, reduce to the lowest terms

Thus ¾ X 6/8 = 18/32

18/32 = 9/16

If needed, refer to the article, Reducing Fractions.

In summary, ¾ X 6/8 = 18/32 = 9/16

1) Convert all mixed numbers to improper fractions

2) Multiply numerators

3) Multiply denominators

4) If necessary, reduce to the lowest terms

Multiply the whole number and the denominator. Then, add the numerator. The denominator remains the same.

2 ¾ = 2 x 4 + 3 = 11/4

1) Change whole numbers to fractions

2) Multiply numerators

3) Multiply denominators

4) If necessary, simplify to the lowest terms

Remember, one is the denominator for all whole numbers

The above fraction 30/7 is an improper fraction and it is improper to leave it that way! So, 30 was divided by 7. The result is 4 remainder 2. Four represents the whole number and the remainder is represented as the fraction 2/30. …but we’re not finished! The numerator and denominator of 2/30 have factors in common. Therefore, the numerator and denominator were divided by the greatest common factor, 2, in this case, and the final result is 4 1/15.

In summary,

Other Skills Needed:

Converting improper fractions to mix numbers

Converting mixed numbers to improper fractions

Reducing fractions

**I. Steps for Multiplying Fractions**1) Multiply the numerators

2) Multiply the denominators

3) If necessary, reduce to the lowest terms

**Example:**¾ X 6/8**1) Multiply the numerators:**3 X 6 = 18**2) Multiply the denominators:**4 X 8 = 32Thus ¾ X 6/8 = 18/32

**3) If necessary, reduce to the lowest terms**18/32 = 9/16

If needed, refer to the article, Reducing Fractions.

In summary, ¾ X 6/8 = 18/32 = 9/16

**II. Steps for Multiplying Fractions With Mixed Numbers**1) Convert all mixed numbers to improper fractions

2) Multiply numerators

3) Multiply denominators

4) If necessary, reduce to the lowest terms

**Example:**2 ¾ X 6/8**1) Convert mixed numbers to improper fractions**Multiply the whole number and the denominator. Then, add the numerator. The denominator remains the same.

2 ¾ = 2 x 4 + 3 = 11/4

**Now, the problem reads: 11/4 X 6/8****2) Multiply numerators:****11 X 6 = 66**

Thus 11/4 X 6/8 = 66/32

Since, the numerator is larger than the denominator, it is considered an improper fraction. Convert to a mixed number.

66/32 =

The line between the 66 and 32 is called the fraction bar. The fraction bar denotes division. So read this number as 66 divided by 32. When you do the division, you get 2 with a remainder of 2. The 2 represents 2 wholes, let’s say 2 gigantic pizzas. The remainder indicates part of a whole (pizza). So, represent the remainder in fraction form.. Notice that the denominator remains the same.

Note the fraction 2/32 had common factors and was reduced to 1/16.

In summary,

2 1/16**3) Multiply denominators:**4 X 8 = 32Thus 11/4 X 6/8 = 66/32

**4) If necessary, reduce to the lowest terms**Since, the numerator is larger than the denominator, it is considered an improper fraction. Convert to a mixed number.

66/32 =

The line between the 66 and 32 is called the fraction bar. The fraction bar denotes division. So read this number as 66 divided by 32. When you do the division, you get 2 with a remainder of 2. The 2 represents 2 wholes, let’s say 2 gigantic pizzas. The remainder indicates part of a whole (pizza). So, represent the remainder in fraction form.. Notice that the denominator remains the same.

**Thus, 66/32 = 2 2/32 = 2 1/16**Note the fraction 2/32 had common factors and was reduced to 1/16.

In summary,

**2 ¾ X 6/8 =**11/4 X 6/8 = 66/32 = 2 2/32 =**III. Steps for Multiplying Fractions and Whole Numbers**1) Change whole numbers to fractions

2) Multiply numerators

3) Multiply denominators

4) If necessary, simplify to the lowest terms

**Example: 6/7 X 5****1) Change whole numbers to fractions:**5 = 5/1Remember, one is the denominator for all whole numbers

**2) Multiply numerators:**6 X 5 = 30**3) Multiply denominators:**7 X 1 = 7**Thus:**6/7 X 5 = 30/7**4) If necessary, simplify to the lowest terms****30/ 7 =**4 2/30 =**4 1/15**The above fraction 30/7 is an improper fraction and it is improper to leave it that way! So, 30 was divided by 7. The result is 4 remainder 2. Four represents the whole number and the remainder is represented as the fraction 2/30. …but we’re not finished! The numerator and denominator of 2/30 have factors in common. Therefore, the numerator and denominator were divided by the greatest common factor, 2, in this case, and the final result is 4 1/15.

In summary,

**6/7 X 5 =**30/7 = 4 2/30 = 4 1/15.**You Should Also Read:**

Multiplication Facts - Nine Timetables

GCF and LCM by Prime Factorization

Reducing Fractions

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