Steps
Subtracting fractions w/ unlike denominators
Adding and subtracting mixed numbers w/ unlike denominators
Vocabulary
100

What is the first step when solving adding and subtracting fractions with unlike denominators?

Find the LCM to find the common denominator.

100

2         1

____ + ____ =

3          4

11

___

12

100

1         1

____ - ___ =

3        4

1

___

12

100

3          2

2  ____ +  ___ =

4          3

41

____

12

100

What is a denominator?

The number below the line in a fraction.

200

What is the second step when adding and subtracting fractions with unlike denominators?

Create equivalent fractions with like denominators.

200

3         2

____ + ___ =

4         3

17

___

12

200

2          1

____ - ___ =

3         5

Joe

200

1         5

2  ____ +  ___ =

4         6

74

______

24

200

What is a numerator?

The number above the line in a fraction.

300

What is the third step when adding and subtracting fractions with unlike denominators?

300

4         3

____ + ___ =

5         4

31

____

20

300

1         1

____ - ___ =

2         5

300

1          4

3  ____ +   ___ =

4           5

81

____

20

300

What does equivalent mean?

Equal in value or the same in value.

400

What is the fourth step when adding and subtracting fractions with unlike denominators?

Simplify the fraction (If Needed).

400

6         5

____ + ___ =

7         6

71

_____

42

400

4         2

____ - ___ =

5         3

2

___

15

400

1          4

3  ____ -   ___ =

5          6

76

____

30

400

What does simplify mean?

To reduce a fraction to it's simplest form.

500

What is 4/6 simplified?

2/3

500

5         7

____ + ___ =

7          8

89

_____

56

500

5         1

____ - ___ =

7         3

8

___

21

500

2            2

4  ____ -  3  ___ =

6          3

12           2

_____ = _____

18           3

500

What is a common denominator?

A shared multiple of the denominators.