Solving Multiplicative Comparison Word Problems

This video tutorial teaches how to solve multiplicative comparison word problems using multiplication or division. It begins with an introduction to the concept, followed by examples involving the cost of hats, the height of a giraffe compared to a kangaroo, and the length of a bus compared to a car. The tutorial explains how to determine when to use multiplication or division by identifying missing factors and using bar models to visualize the problems.

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

• Calculate the final answer

• Determine if the problem is multiplicative or additive

• Identify the unknown factor

• Decide whether to use addition or subtraction

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CCSS.3.OA.D.8

What does a multiplicative comparison word problem involve?

• Comparing products

• Comparing sums

• Comparing quotients

• Comparing differences

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CCSS.4.OA.A.2

How much does the red hat cost if the blue hat costs $6?

• $18

• $12

• $24

• $6

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CCSS.5.OA.B.3

How do you determine the cost of an item that is three times as expensive as another?

• Divide the cost of the cheaper item by 3

• Multiply the cost of the cheaper item by 3

• Subtract the cost of the cheaper item from itself

• Add the cost of the cheaper item to itself twice

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CCSS.4.OA.A.2

What is the purpose of using bar models in comparison problems?

• To calculate the sum

• To simplify division

• To visualize the comparison

• To determine the difference

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CCSS.6.NS.B.3

What operation is used to find out how many times taller the giraffe is than the kangaroo?

• Multiplication

• Subtraction

• Addition

• Division

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CCSS.4.OA.A.2

Which operation can alternatively be used to solve for an unknown factor in a multiplicative comparison?

• Multiplication

• Division

• Subtraction

• Addition

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CCSS.3.OA.A.4

In the context of the video, what does the unknown factor represent?

• The additive factor

• The difference in size

• The multiplicative factor

• The total cost

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CCSS.3.OA.A.3

Why is division used to solve the problem of determining how many times taller one object is than another?

• To subtract one height from another

• To find the difference in height

• To calculate the total height

• To identify the multiplicative factor

Tags

CCSS.4.OA.A.2

If a bus is 35 feet long and five times as long as a car, how long is the car?

• 175 feet

• 5 feet

• 40 feet

• 7 feet

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CCSS.4.OA.A.2