Solving Multiplicative Comparison Word Problems with Equations

This video tutorial teaches how to solve multiplicative comparison word problems using multiplication sentences. It covers representing unknown numbers in equations with letters or symbols, using bar models for visualization, and solving practical problems like determining the length of yarn and dog leashes. The lesson emphasizes understanding the concept of 'times as many' and applying multiplication to find solutions.

If a piece of yarn is 7 cm long and another is 5 times longer, how long is the second piece?

• 12 cm

• 42 cm

• 35 cm

• 28 cm

What is the result of 6 times 5 when using a letter to represent the unknown?

• A = 35

• A = 40

• A = 30

• A = 25

How many groups of 5 are there in the bar model for 6 times as many as 5?

• 7 groups

• 5 groups

• 4 groups

• 6 groups

If a dog leash is 12 inches long and another is 3 times longer, what is the length of the second leash?

• 36 inches

• 42 inches

• 30 inches

• 24 inches

Using a letter, how would you represent the length of Fred's dog leash if it is 3 times longer than a 12-inch leash?

• A = 42 inches

• A = 24 inches

• A = 30 inches

• A = 36 inches