Cost and Quantity Word Problems

The video tutorial covers lessons 20 and 21, focusing on evaluating expressions using multiplication, division, and addition. Lesson 20 emphasizes creating expressions with multiplication and division, using examples like calculating the number of M&Ms in bags. Lesson 21 introduces expressions with multiplication and addition, illustrated by a taxicab fare example. The tutorial also includes practical word problems for students to solve, reinforcing the concepts taught.

If each bag contains 25 M&Ms, how many M&Ms are there in 3 bags?

• 50

• 75

• 125

• 100

What expression represents the total number of M&Ms in B bags?

• B + 25

• 25 - B

• 25B

• B/25

If you have M M&Ms, how can you find the number of bags?

• Subtract 25 from M

• Add 25 to M

• Divide M by 25

• Multiply M by 25

What is the total fare for a 10-mile taxi ride with a $5 flat rate and $1.25 per mile?

• $12.50

• $17.50

• $22.50

• $27.50

How much would a 20-mile taxi ride cost with a $5 flat rate and $1.25 per mile?

• $25.00

• $30.00

• $35.00

• $40.00

If Brian's family travels 60 miles in 2 hours, what is their average speed?

• 20 mph

• 30 mph

• 40 mph

• 50 mph

For every pizza ordered, there is a $6 charge plus a $2 delivery fee. What is the total cost for 3 pizzas?

• $20

• $30

• $24

• $26

If you order 5 pizzas, what is the total delivery charge?

• $2

• $6

• $12

• $10

What is the expression for the total cost of P pizzas with a $6 charge each and a $2 delivery fee?

• P/6 + 2

• 6P - 2

• 6 + 2P

• 6P + 2

If the total cost for P pizzas is $20, how many pizzas were ordered?

• 3

• 2

• 4

• 5