Chelsea has seven twenty-dollar notes, five ten-dollar notes, three five-dollar notes and twelve one-dollar notes in her purse. She saw a doll set which she wanted to buy which was priced at \( \$ 325 \). How much more money does she need before she can purchase the doll set?

Chelsea has a total of \( 7 \times 20 + 5 \times 10 + 3 \times 5 + 12 \times 1 \). Let's break that down: - For the twenty-dollar notes: \( 7 \times 20 = 140 \) - For the ten-dollar notes: \( 5 \times 10 = 50 \) - For the five-dollar notes: \( 3 \times 5 = 15 \) - For the one-dollar notes: \( 12 \times 1 = 12 \) Now, let's add them up: \( 140 + 50 + 15 + 12 = 217 \). Chelsea has \( \$217 \) in total. To find out how much more she needs for the doll set priced at \( \$325 \), we subtract her total from the price: \( 325 - 217 = 108 \). So, Chelsea needs \( \$108 \) more to buy the doll set.