Astudent solved this problem and said the answer is 2 3/8 cups.

mariana wanted to make some bread. the recipe called for 4 3 /4 cups of flour. she only had 2 3/8 cups of flour. how much more flour does mariana need?

is the student's answer reasonable?

yes, the answer is reasonable.

no, the answer is not reasonable. it should be a bit less than 1 cup.

no, the answer is not reasonable. it should be a bit less than 2 cups.

no, the answer is not reasonable. it should be about 7 cups.



a student solved this problem and said the answer was 11 7/10 feet.

tim had three pieces of wood. one piece was 3 1/5 feet long, one piece was 4 3/10 feet long, and the third piece was 4 1/5 feet long. what was the total length of the three pieces of wood?

is the student's answer reasonable?

no, the answer is not reasonable. it should be about 2 feet.

yes, the answer is reasonable.

no, the answer is not reasonable. it should be about 6 feet.

no, the answer is not reasonable. it should be about 20 feet.