Divide Whole Numbers by Unit Fractions Practice Test

A classroom has 6 yards of string for a project. The teacher is deciding between cutting pieces that are each $\tfrac{1}{2}$ yard long or pieces that are each $\tfrac{1}{3}$ yard long. Dividing by a unit fraction asks how many of those fractional pieces fit into 6 yards. Which claim is incorrect?

A baker has 4 cups of flour. One muffin recipe uses $\tfrac{1}{2}$ cup of flour. Dividing by a unit fraction asks how many $\tfrac{1}{2}$-cup groups fit into 4 cups. If you draw 4 cups as 8 half-cup blocks, what does the quotient of $4 \div \tfrac{1}{2}$ represent?