DS was in second and it seemed to be about the right level for him, but the written answer component did indeed bog him down. His teacher knows he has special needs and didn't make him "explain" everything, he just had to write his answer. On the one test that I have there is a question "Use an example probelm & your words to explain the steps you would follow to add or subract two fractions with different denominators." DS had obviously had someone scribe his answer, which was rather rambling.
Other questions on this test involve recipes with fractions but they have to triple the recipe or find 3/4 of the recipe. An example of a word problem is "If there are 15 cups of punch in the punchbowl and the glasses the students are using each hold 3/4 of a cup, how many glasses can you fill?" Luckily it doesn't say "Explain 3 different ways to solve this problem, showing all the steps" or anything like that. I know other math curriculums get bogged down with that, but this one seems reasonable.