7. A bowl holds 5 and 1/3 cups. If Carmen pours 3 and 3/4 cups of flour into the bowl, how much room is left in the bowl?

This is a subtraction problem.

We need to find common denominators. The smallest common denominator for 3 and 4 is 12

When we go to subtract the fractions, we see that we are trying to take away more than we have so we have to borrow. Borrow 1 from the 5 and add it to the fraction on top.

Turn the one and four twelfths into an improper fraction.

Now we can subtract the fractions.

Put the 7/12 into the fraction's place in the answer,

and then subtract the whole numbers. When we subtract the whole numbers, remember that we had to borrow from the whole number on top, so there is only a 4 left in the whole number's place on top.