Adding/ Subtracting Fractions

Misc

1

What is the top number of a fraction called?

The numerator

2

What is the bottom of a fraction called?

The denominator.

3

What does the denominator of a fraction tell us?

The total number of pieces we have in the whole.

4

When a fraction as the same number in the numerator and denominator, what does it equal?

It equals 1 whole.

5

Like denominators are also know as ___________ denominators.

Like denominators are also known as COMMON denominators.

Add Like Denominators #1

1

1/2 + 1/2 =

2/2

2

1/4 + 2/4 =

3/4

3

1/5 + 3/5 =

4/5

4

6/12 + 4/12 =

10/12

5

10/25 + 13/25 =

23/25

Add Like Denominators #2

1

1/6 + 2/6

3/6

2

6/6 + 1/6 =

7/6

3

2/5 + 2/5 =

4/5

4

21/40 + 8/40 =

29/40

5

6/9 + 2/9 =

8/9

Subtract Like Denominators #1

1

10/11 - 4/11 =

6/11

2

2/2 - 1/2

1/2

3

9/10 + 3/10 =

6/10

4

7/8 - 5/8 =

2/8

5

13/20 - 4/20 =

9/20

Subtract Like Denominators #2

1

9/13 - 4/13 =

5/13

2

12/20 - 10/20 =

2/20

3

25/32 - 15/32 =

10/32

4

10/15 - 3/15 =

135/135

7/15

5

37/43 - 23/43 =

14/43