Multiplying/Dividing Fractions

1
Multiplying/Dividing Fractions

• Mrs. Matej

2
Multiplying Fractions 5 Steps

• Step 1. Change all mixed fractions to an improper
  fraction.

1
9
2
3
3
8
3 x 3 1 10
8 x 2 9 25
10
25
3
8
3
Multiplying Fractions 5 Steps
Step 2. Cross-Reduce if possible.
10
25
3
8
5
25
4
3
4
Multiplying Fractions 5 Steps
Step 3. Multiply Top x Top
5
25
125

4
3
5
Multiplying Fractions 5 Steps
Step 4. Multiply Bottom x
Bottom
5
25
125

4
3
12
6
Multiplying Fractions 5 Steps
5
25
125
Step 5. SIMPLIFY

4
3
12
10
12
125
120
5
5
10
ANSWER
12
7
Dividing Fractions-6 Steps

• Step 1. Change all mixed fractions to an improper
  fraction.

1
9
2
3

3
8
3 x 3 1 10
8 x 2 9 25
10
25

3
8
8
Dividing Fractions-6 Steps

• Step 2. Change the division sign to
  multiplication and flip the second fraction.

10
25

3
8
10
8
x
3
25
9
Dividing Fractions-6 Steps
2
10
8
Step 2. Cross-Reduce if possible.
x
3
25
5
2
8
x
3
5
10
Dividing Fractions-6 Steps
2
8
16
Step 3. Multiply Top x Top
x

3
5
11
Dividing Fractions-6 Steps
Step 4. Multiply Bottom x
Bottom
2
8
16
x

3
5
15
12
Dividing Fractions-6 Steps
2
8
16
x

Step 5. SIMPLIFY
3
5
15
1
15
16
15
1
1
1
ANSWER
15