5.4B

Cindy must beat a time of 39.5 minutes to win a race. Her first lap was 13.7 minutes, her second lap was 13.4 minutes, and her last lap was 12.9 minutes. Which equation can be used to find t, Cindy’s time in the race?

• 39.5 + 13.4 + 12.9 = t

• 13.7 + 39.5 + 12.9 = t

• 13.7 – 13.4 + 12.9 = t

• 13.7 + 13.4 + 12.9 = t

What value of r makes the equation below true?

11 + 2 x 6 = 45 – r

• 22

• 12

• 46

• 1

Lizzie keeps her doll collection in a display cabinet. She has 15 dolls from other countries on 5 shelves with the same number on each shelf. She also has 2 antique porcelain dolls on each shelf. Which equation can be used to find the number of dolls, d, on each shelf?

• d ÷ 5 + 2 = 15

• d x 5 + 2 = 15

• 15 x 5 + 2 = d

• 15 ÷ 5 + 2 = d

Sam’s shopping list included the following items: 2lbs. Green beans, 1 loaf of bread, and a chocolate cake. The tax on the items was $1.20. Write an equation that shows t, the total of Sam’s bill.

Kimberly ordered 24 boxes of baseballs. Each box contained 16 baseballs. Kimberly used 8 of these baseballs during a game. Which equation can be used to find b, the total number of these baseballs that Kimberly did NOT use during the game?

• b = (24 + 16) – 8

• b = (24 x 16) – 8

• b = (24 – 16 ÷ 8

• b = (24 x 16) + 8