Adding & Subtracting Fractions Review

Estimate (0, 1/2, 10

100

9/10 + 5/6 =

1 + 1 = 2

200

2/4 + 2/8 =

1/2 + 0 = 1/2

300

9/11 - 1/3 =

1 - 0 = 1

400

5/7 - 1/4 =

1/2 - 0 = 1/2

500

13/15 - 5/8 =

1 - 1/2 = 1/2

Adding Fractions

100

7/9 + 2/3 = 

1  4/9

200

3/8 + 2/8 =

5/8

300

2/10 + 4/5 =

10/10 or 1

400

3/7 + 1/2 =

13/14

500

1/6 + 1/3 + 1/6 =

4/6  or  2/3

Subtracting Fractions

100

2/3 - 5/9 =

1/9

200

4/5 - 1/4 =

11/20

300

6/7 - 1/2 =

5/14

400

7/10 - 2/5 =

3/10

500

2/9 - 1/6 =

1/18

Mixed Numbers

100

2  1/6  +  1  2/6  =

3  1/2

200

3  2/5  +  1  9/10  = 

4  13/10  OR  5  3/10

300

7  7/8  -  4  2/8  =

3  5/8

400

12  1/3  -  5  4/6 =

6  4/6  OR  6  2/3

500

2  6/10  +  1  3/5  =

4  2/10  OR  4 1/5

Everything!

100

9  1/2  -  6  3/4 =

2  3/4

200

1  7/8  +  5  1/4  =

7  1/8

300

6/5  -  3/8  =

33/40

400

4/18  +  2/9  =

4/9

500

13/14  -  (1/2  +  2/7)  =

2/14  OR  1/7