Understanding Comparison Bar Models

What is the primary purpose of using a comparison bar model in subtraction word problems?

• To divide numbers accurately

• To multiply numbers easily

• To visually represent and compare quantities

• To add numbers quickly

In the word problem about Mr. McDonald's Farm, what is the known quantity?

• The number of pigs

• The number of chickens

• The number of cows

• The number of sheep

How many fewer cows are there than sheep on Mr. McDonald's Farm?

• 89

• 67

• 45

• 100

What mathematical operation is used to find the number of cows on the farm?

• Addition

• Multiplication

• Division

• Subtraction

How many cows are there on Mr. McDonald's Farm after solving the problem?

• 312

• 178

• 245

• 67