Fractions

Add and Subtract fractions with unlike denominators

100

4/8 +1/2

1 whole 

200

3/20 + 2/5

11/20

300

2/12 + 2/4  

2/3 or 8/12

400

7/10 - 2 / 9

43/90

500

1/5 + 2/20 + 4/5

19/20

Find Common denominators

100

6 and 4

12 or 24

200

9 and 2

18

300

10 and 3

30 or 60

400

5 and 12

60

500

9 and 6

54

Estimate sums and differences of mixed numbers

100

1 1/3 + 2 4/6

1 + 3= 4

200

7  1/7 + 2  1/4

7 + 2 =9

300

5   7/10 +  3  2/4

6 + 4 = 10

400

4  9/19 + 2  10/20

4 + 3 =7 

500

8  19/30  +  8  14/30

9+8= 17

Add and Subtract fractions with like denominators

100

14/15 - 13/15

1/15

200

12/ 28 + 3/28

15/28

300

86/100 - 74/100

12 / 100 

400

(1/15 + 4/15) - 2/15

3/15 or 1/5

500

(8/9 - 5/9) + 2/9

5/9

Add Mixed Numbers

100

1 6/18 + 9  8/18

10 7/9 or 10 14/20

200

2  6/8 +  2  5/8

5  3/8 

300

2  12/20 + 8  3/20

10 3/4 

400

10  1/2  +  7  1/2

18

500

8  3/4  + 9  3/4 

18  1/2