Adding Fractions

Question 1:

3 8 + 5 8
8 8 = 1

Question 2:

2 4 + 2 4
4 4 = 1

Question 3:

3 9 + 2 9
5 9

Question 4:

3 5 + 6 15
15 15 = 1

Question 5:

1 2 + 2 6
5 6

Question 6:

5 20 + 3 12
30 60 = 1 2