Solving Word Problems with Multiplicative Comparison using Bar Models

This video tutorial teaches how to solve word problems using multiplicative comparison with bar models. It explains key phrases that indicate multiplicative comparison and demonstrates solving problems involving the cost of hats and lamps. The tutorial emphasizes understanding and applying bar models to visualize and solve these problems effectively.

Which of the following phrases indicates a multiplicative comparison?

• Equal to

• As much as

• Less than

• Times as many

If a blue hat costs $6, how much does a red hat cost if it is three times more expensive?

• $12

• $18

• $24

• $30

What is the cost of a red hat if a blue hat costs $6 and the red hat is three times as expensive?

• $6

• $12

• $18

• $24

A yellow lamp costs $8. How much does an orange lamp cost if it is four times as expensive?

• $16

• $24

• $32

• $40

If an orange lamp is four times the cost of a yellow lamp priced at $8, what is the total cost of the orange lamp?

• $24

• $28

• $32

• $36