Interpret Fraction Multiplication Products Practice Test

A student has 18 stickers. She divides them into 9 equal piles. Then she gives away 4 of the piles. This matches $\frac{4}{9}\times 18$.

Which claim about $\frac{4}{9}\times 18$ is incorrect?

A recipe uses 8 cups of water in a big container. The water is poured into 4 equal pitchers. Then the cook uses 3 of the pitchers. This matches the expression $\frac{3}{4}\times 8$.

Which claim about $\frac{3}{4}\times 8$ is incorrect?