Oh how I hate these! DD is in 2nd grade and they have to do 100 problems in 5 min. We have the tests at least 2X a week. Once addition, once subtraction. She passes them, but the teacher told me some kids get so worked up over them that they sweat and everything. My dd gets anxious from them. I think once they pass them they should be exempt from doing them anymore,but NOPE! Repetition is crazy at school.