Respuesta :
Answer:53
Step-by-step explanation: all you do is just subtract 3 from 56 because oz means ounces
Simple the answer is 21 oz because the kitten was 2 lb 3 oz and now it weighs 56 oz so the kitten gained 21 oz

Answer:53
Step-by-step explanation: all you do is just subtract 3 from 56 because oz means ounces