Fraction Operations

Adding Fractions

100

3/4 + 2/4 =

5/4 or 1 1/4

200

3/8 + 2/6 =

17/24

300

3 1/3 + 5 2/9 =

8 5/9

400

18 3/5 + 7 2/3 =

25 19/15 or 26 4/15

500

7 1/2 + 5 3/4 + 9 3/12 =

21 18/12 or 22 6/12 or 22 1/2

Subtracting Fractions

100

2/7 - 1/7 =

1/7

200

3/3 - 1/6 =

5/6

300

1 3/8 - 1/4 =

1 1/8

400

5 2/3 - 3 1/2 =

2 1/6

500

4 5/8 - 2 2/3 =

1 23/24

Multiplying Fractions

100

2/7 x 1/3 =

3/21 or 1/7

200

2/5 x 3/8 = 

6/40

300

6 x 1/4 =

6/4 or 1 2/4 or 1 1/2

400

6 x 1 1/2 =

18  1/2 or 9

500

(4 x 2/5) x 5 =

40/5 or 8

Dividing Fractions

100

1/2  /  1/2 = 

2/2 or 1

200

5/8  /  5/2 = 

10/40 or 1/4

300

6  /  1/4 =

24

400

1/3  /  5 =

1/15

500

Mrs. Buswell made 3 loaves of lemon blueberry bread.  If one serving is 1/8 loaf, how many servings are there in total?

24

Mixed Bag Fractions

100

What is the least common multiple of 2 and 6?

6

200

1 5/6 + 1/3 =

2 1/6

300

3 1/2 x 2 4/5 =

98/10  or  9 8/10

400

Lydia had 10 feet of ribbon.  She used 4/5 of it to tie a bow for a gift.  How much ribbon, in feet, did she use?

Number model - 10 * 4/5 = 8

She used 8 feet of ribbon.

500

7 5/8 - 1 3/4 =

5 7/8