IF a recipe calls for 1 carrot shredded and I bought shredded carrots how much do I put in?

Quick answer: 2/3 cup. Reasoning: According to http://www.thecaloriecounter.com/, a carrot weighs 72 g. 1 cup of grated carrots weighs 110 g. Therefore, 1 carrot worth of grated carrots would be 72/110 of a cup, which is .65 of a cup, or about 2/3 cup.