Understanding Bar Models for Word Problems

The video tutorial demonstrates how to solve word problems using bar models. It begins with reading and understanding the problem, followed by setting up a bar model to represent the data. The tutorial then guides through solving the problem using subtraction and concludes with writing a complete sentence to answer the question. Key steps include drawing the model, writing a number sentence, and solving for the missing part.

What is the first step in solving a word problem using bar models?

• Write a number sentence

• Solve the equation

• Read the problem carefully

• Draw the bar model

How can you identify a comparing problem in a word problem?

• It involves division

• It involves more than or less than comparisons

• It involves multiplication

• It involves addition

In a comparing problem, what does each person or item get?

• A number sentence

• A separate bar

• A complete sentence

• A subtraction equation

What is the purpose of drawing a dotted line in a bar model?

• To show the total

• To indicate the end of one part

• To label the bars

• To separate the bars

What does the question mark represent in a bar model?

• The total

• The known part

• The unknown part

• The whole

What operation is used to solve a missing part problem in a comparing problem?

• Multiplication

• Addition

• Subtraction

• Division

How do you solve 88 minus 32 using mental math?

• Subtract 40 and then 8

• Subtract 50 and then 6

• Subtract 30 and then 2

• Subtract 20 and then 10

What is the final step after solving the equation in a word problem?

• Draw the bar model

• Check the answer

• Write a complete sentence

• Identify the problem type

What are the three components of a proper bar model?

• Model, subtraction, addition

• Diagram, calculation, answer

• Picture, number sentence, complete sentence

• Equation, solution, question

Why is it important to write a complete sentence after solving a word problem?

• To check the math

• To ensure clarity and understanding

• To draw the model

• To label the bars