Adding and subtracting fractions with like denominators

Adding

100

2/8 + 3/8

5/8

200

8/35 +  6/35

14/35

300

3/16 + 4/16

7/16

400

57/102 +36/102

93/102

500

137/194 + 32/194

169/194

Subtract

100

8/9 - 5/9

3/9

200

6/6 - 1/6

5/6

300

35/78 + 37/78

72/78

400

75/127 +27/127

102/127

500

62/198 + 72/198

134/198

Mix of the 2

100

8/9 - 3/9

5/9

200

7/19 + 4/19

11/19

300

35/67 -26/67

9/67

400

102/124 - 71/124

31/124

500

17/208 + 75/208

92/208

Mix of the 2

100

6/7 - 1/7

5/7

200

7/16 + 4/16

11/16 

300

27/56 - 14/56

13/56

400

987/1099-25/1099

965/1099

500

203/215 - 87/215

116/215

Mix of the 2

100

6/13 + 3/13

9/13

200

7/9 - 5/9

2/9

300

35/76 + 27/76

62/76

400

99/100 - 64/100

35/100

500

346/757 - 259/757

87/757