Integer Multiplication Concepts

This video tutorial covers modeling integer multiplication using a number line, focusing on multiplying integers with different signs. The teacher explains the concept through examples and introduces a shortcut for determining the sign of the product. Students are encouraged to practice using both the number line and the shortcut. The lesson concludes with homework instructions and a reminder about an upcoming quiz.

What is the main tool used in this lesson to model integer multiplication?

• Multiplication table

• Calculator

• Graph paper

• Number line

When multiplying integers with different signs, what is the sign of the product?

• Depends on the numbers

• Zero

• Negative

• Positive

If you multiply 4 by -2 using a number line, where do you end up?

• Positive 8

• Negative 8

• Positive 2

• Zero

What is the result of multiplying 2 by -3?

• -9

• 0

• -6

• 6

What pattern is observed when multiplying integers with different signs?

• The product is always positive

• The product is always negative

• The product is zero

• The product is the larger number

What is the shortcut for multiplying numbers with different signs?

• Multiply as usual and make the result positive

• Subtract the numbers and make the result positive

• Multiply as usual and make the result negative

• Add the numbers and make the result positive

What is the result of 3 times -3?

• -9

• -6

• 9

• 0

How many times do you move to the left when multiplying 5 by -2?

• 5 times

• 2 times

• 10 times

• 1 time

What is the result of 5 times -4?

• 0

• -16

• -20

• 20

What is the homework suggestion for practicing integer multiplication?

• Write a report

• Memorize multiplication tables

• Draw a number line or use the shortcut

• Use a calculator