Lesson 13: Practice Problems

Problem 1

Mai had $14.50. She spent $4.35 at the snack bar and $5.25 at the arcade. What is the exact amount of money Mai has left?

  1. $9.60

  2. $10.60

  3. $4.90

  4. $5.90

Problem 2

A large cheese pizza costs $7.50. Diego has $40 to spend on pizzas. How many large cheese pizzas can he afford? Explain or show your reasoning.

Problem 3

Tickets to a show cost $5.50 for adults and $4.25 for students. A family is purchasing 2 adult tickets and 3 student tickets.

  1. Estimate the total cost.

  2. What is the exact cost?

  3. If the family pays $25, what is the exact amount of change they should receive?

Problem 4

Chicken costs $3.20 per pound, and beef costs $4.59 per pound. Answer each question and show your reasoning.

  1. What is the exact cost of 3 pounds of chicken?

  2. What is the exact cost of 3 pound of beef?

  3. How much more does 3 pounds of beef cost than 3 pounds of chicken?

Problem 5 From Unit 3 Lesson 12

  1. How many -liter glasses can Lin fill with a -liter bottle of water?

  2. How many -liter bottles of water does it take to fill a 16-liter jug?

Problem 6

Use the grid to complete this problem.

Let the side length of each small square on the grid represents 1 unit. Draw two different triangles, each with base units and area units.

Why does each of your triangles have area ? Explain or show your reasoning.

blank grid

Problem 7

Find each quotient.