1. 2 3/8 + 1 7/8

2 3/8

+ 1 7/8

----------

3 10/8 = 4 1/4

Answer: C. 4 1/4

2. 10 1/2 + 3/4

find the lcd: 4

1/2×2/2= 2/4

2+3

10 ------ = 10 5/4 = 11 1/4

4

Answer: B. 11 1/4

3. 1 9/10 + 3/5

find the lcd: 10

3/5×2/2= 6/10

9+6

1 ------ = 1 15/10 = 2 1/2

10

Answer: D. 2 1/2

4. 2 3/4 + 1 3/5

find the lcd: 20

3/4×5/5= 15/20

3/5×4/4= 12/20

2 15/20

+ 1 12/20

--------------

3 27/20 = 4 7/20

Answer: A. 4 7/20 gallons

5. 5 1/3 + 4 11/15

find the lcd: 15

1/3×5/5= 5/15

5 5/15

+ 4 11/15

-------------

9 16/15 = 10 1/15

Answer: D. 10 1/15 glasses