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 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 fractions
2 ½ X ¼
5 1
2 4X
5
8
Examples 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 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 = 12Back to
Quiz