Mastering Adding and Subtracting Rational Expressions

The video tutorial introduces students to integer modeling using practice quizzes. It explains the use of integer counters, both positive and negative, and demonstrates how to solve problems using these counters. The tutorial also covers graphical representation of integer addition problems and provides step-by-step solutions. The session concludes with instructions for homework, emphasizing careful reading and problem-solving.

What do the red and white circles represent in integer modeling?

• Red is negative two, white is positive two

• Red is positive two, white is negative two

• Red is positive one, white is negative one

• Red is negative one, white is positive one

If you have four negative ones and three positive ones, what is the result?

• Negative 4

• Positive 1

• Negative 1

• Positive 4

In the integer counter problem, which equation matches four negative ones and three positive ones?

• Positive 4 plus negative 3 equals positive 1

• Negative 4 plus positive 3 equals positive 1

• Positive 4 plus negative 3 equals negative 1

• Negative 4 plus positive 3 equals negative 1

What do the black and white squares represent in the second integer modeling problem?

• Black is negative two, white is positive two

• Black is positive two, white is negative two

• Black is positive one, white is negative one

• Black is negative one, white is positive one

If you have seven positive ones and three negative ones, what is the result?

• Positive 10

• Negative 10

• Negative 4

• Positive 4

In the graph problem, what is the result of six plus negative two?

• Positive 8

• Negative 4

• Positive 4

• Negative 8

Which equation matches the graph showing six plus negative two?

• Six plus negative 2 equals negative 4

• Negative 2 plus 6 equals negative 4

• Six plus negative 2 equals 4

• Negative 2 plus 6 equals 4

In the final problem, what is the result of negative 15 plus negative 5?

• Negative 10

• Positive 10

• Negative 20

• Positive 20

Which equation matches the problem modeled with two positive and four negative counters?

• Two plus negative 4 equals negative 2

• Negative 2 plus 4 equals positive 2

• Two plus negative 4 equals positive 2

• Negative 2 plus 4 equals negative 2

What should you do if none of the given answers match your integer addition problem?

• Skip the question

• Select the first option

• Select the last option

• Select 'None of these'