Exploring Multiplicative Comparisons for 4th Graders

The video tutorial focuses on solving multiplicative comparison problems by examining a problem involving ribbon lengths. It introduces the concept, presents a problem, and guides through coding and modeling the problem. The tutorial demonstrates how to set up a model, solve the problem by drawing models, and concludes with the solution, emphasizing the comparison between the lengths of two ribbons.

What is the main focus of multiplicative comparison problems?

• Adding two numbers

• Comparing two objects using multiplication

• Subtracting two numbers

• Dividing two objects

If a purple ribbon is 3 cm long and a blue ribbon is four times as long, what is the length of the blue ribbon?

• 6 cm

• 15 cm

• 9 cm

• 12 cm

What is the first step in solving a word problem involving multiplicative comparison?

• Multiplying the numbers

• Drawing a model

• Coding the word problem

• Writing the final answer

What should you do with the exact length given in a word problem?

• Ignore it

• Write it down separately

• Underline it

• Circle it

What is the purpose of underlining the comparison statement in a word problem?

• To ignore it

• To circle it

• To write it down separately

• To highlight the unknown information

When setting up the model, what should you write first?

• The final answer

• The comparison statement

• The names of the objects being compared

• The lengths of the ribbons

How many groups of 3 cm should be drawn to represent the blue ribbon?

• 3

• 5

• 2

• 4

What does each block in the model represent?

• 3 cm

• 2 cm

• 4 cm

• 1 cm

What is the final length of the blue ribbon after modeling the problem?

• 9 cm

• 10 cm

• 11 cm

• 12 cm

How should you present your final answer in a word problem?

• As a single number

• As a drawing

• As a comparison statement

• As a question