multiplying fractions

1. Fractions – Multiplying & Dividing – Demonstration
This resource provides animated demonstrations of the mathematical method.
Check animations and delete slides not needed for your class.

2. 1
2
×
1
3
=
(2 x 3)
(1 x 1)
(1)
(6)
1
6
To quickly multiply fractions we
multiply the numerators
multiply the denominators

3. 1
3
×
2
3
=
(3 x 3)
(1 x 2)
(2)
(9)
2
9
To quickly multiply fractions we
multiply the numerators
multiply the denominators

4. 1
4
×
2
3
=
(4 x 3)
(1 x 2)
(2)
(12)
2
12
Can we simplify
this fraction?
=
1
6
To quickly multiply fractions we
multiply the numerators
multiply the denominators

5. 2
3
×
1
5
=
(3 x 5)
(2 x 1)
(2)
(15)
2
15
Can we simplify
this fraction?
To quickly multiply fractions we
multiply the numerators
multiply the denominators

6. 3
4
×
2
5
=
(4 x 5)
(3 x 2)
(6)
(20)
6
20
Can we simplify
this fraction?
=
3
10
To quickly multiply fractions we
multiply the numerators
multiply the denominators

7. 5
6
×
3
5
=
(6 x 5)
(5 x 3)
(15)
(30)
15
30
Can we simplify
this fraction?
=
1
2
To quickly multiply fractions we
multiply the numerators
multiply the denominators

8. 1
4
1
3
÷ =
1
4
3
1
3
4
× =
KEEP FLIP
CHANGE
Change the sign.
Flip the divisor.
Dividing is the same as
multiplying by the reciprocal.

9. 1
5
1
4
÷ =
1
5
4
1
4
5
× =
KEEP FLIP
CHANGE
To quickly divide fractions we
keep the first fraction
change the operation
flip the second fraction

10. 1
6
1
5
÷ =
1
6
5
1
5
6
× =
KEEP FLIP
CHANGE
To quickly divide fractions we
keep the first fraction
change the operation
flip the second fraction

11. 2
3
1
4
÷ =
2
3
4
1
8
3
× = 2
2
3
=
KEEP FLIP
CHANGE
To quickly divide fractions we
keep the first fraction
change the operation
flip the second fraction

12. 3
4
1
5
÷ =
3
4
5
1
15
4
× = 3
3
4
=
KEEP FLIP
CHANGE
To quickly divide fractions we
keep the first fraction
change the operation
flip the second fraction

13. 4
5
3
4
÷ =
4
5
4
3
16
15
× = 1
1
15
=
KEEP FLIP
CHANGE
To quickly divide fractions we
keep the first fraction
change the operation
flip the second fraction

14. 1
4
÷
1
3
=
2
3
÷
1
5
=
1
1
3
÷
3
4
=
1
4
×
2
3
=
2
5
×
3
4
=
1
1
2
×
2
3
=
Multiplying
Fractions
Dividing
Fractions

15. 1
4
÷
1
3
=
3
4
2
3
÷
1
5
=
10
3
= 3
1
3
1
1
3
÷
3
4
=
16
9
= 1
7
9
1
4
×
2
3
=
2
12
2
5
×
3
4
=
6
20
=
3
10
1
1
2
×
2
3
=
6
6
= 1
Multiplying
Fractions
Dividing
Fractions