Reciprocal

Multiplying Fractions

Dividing Fractions

QUIZ: Multiplying Fractions

QUIZ: Dividing Fractions

Change any mixed numbers into improper fractions.

Change any whole numbers into improper fractions by putting 1 under the whole number.

Cross cancel wherever possible.

Multiply horizontally.

Reduce if necessary.

EXAMPLES

To find the reciprocal of a fractions, flip it!

You need the reciprocal when dividing fractions!

EXAMPLES:

2 3

3 2

2½ = 5 2

2 5

Change any mixed numbers into improper fractions.

Change any whole numbers into improper fractions by putting 1 under the whole number.

KEEP – SWITCH - FLIP

Cross cancel wherever possible.

Multiply horizontally.

Reduce if necessary.

EXAMPLES

Examples of multiplying fractionsExamples of multiplying fractions

3 8

4 9X

3 8

4 9X

1

1

2

3

1 2

1 3X

1 X 2 = 2

1 X 3 = 3

Another Example

Examples of multiplying fractionsExamples of multiplying fractions

2 ½ X ¼

5 1

2 4X

5

8

Examples of dividing fractionsExamples of dividing fractions

5 10

9 12

KEEP SWITCHFLIP

5 12

9 10 X

1

3

4

2

1 4

3 2x

4

6

2

3

Another Example

Examples of dividing fractionsExamples of dividing fractions

KEEP SWITCH FLIP

3 ½ 2 ¼

7 9

2 4

7 4

2 9x

28

181

5

91 10

18

1. ½ x 4/5 =

2. 4/5 x 10 =

3. 2 ½ x 5 =

4. 5 1/3 x 3 ¾ =

5. 7 2/3 x 1 ½ =

6. 4 x 4 3/8 = CHECK

ANSWERS

1. ½ x 4/5 = 2/5

2. 4/5 x 10 = 8

3. 2 ½ x 5 = 12 ½

4. 5 1/3 x 3 ¾ = 20

5. 7 2/3 x 1 ½ = 11 ½

6. 4 x 4 3/8 = 17 ½

Back to Quiz

1. 6 divided by 3 ½ =

2. 4/5 divided by 2/5 =

3. 1 ½ divided by 3 ¾ =

4. 3 ½ divided by 1 ¾ =

5. 2 ½ divided by 2 ½ =

6. 5 1/3 divided by 4/9 = Check youranswers

1. 6 divided by 3 ½ = 1 5/7

2. 4/5 divided by 2/5 = 2

3. 1 ½ divided by 3 ¾ = 2/5

4. 3 ½ divided by 1 ¾ = 2

5. 2 ½ divided by 2 ½ = 1

6. 5 1/3 divided by 4/9 = 12

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