Add the fractions and reduce the sum to the lowest.

1.6 ⅜ + 5 ²/5 =
2. 2 ¾ + 1 9/10 =
3. 1 ⅓ + 5 ½ =
4. 3 ⁴/5 + 1 ½ =
5. 3 ¹/5 + 54 ⅔ =