Mastering Integer Multiplication and Division

This video tutorial explains the rules for multiplying and dividing integers using counters. It begins with an introduction to the basic rules and the concept of using counters to demonstrate why these rules work. The tutorial covers examples of multiplying integers, including cases with negative numbers, and explains the concept of negatives meaning 'opposite.' It then moves on to division, illustrating how to divide integers and the effect of negative signs. The video aims to provide a clear understanding of integer operations and the reasoning behind the rules.

What does the yellow side of the counter represent?

• Zero

• Negative one

• Positive one

• Positive two

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CCSS.2.OA.A.1

What does a negative sign indicate in the context of this lesson?

• Multiplication

• Subtraction

• Opposite

• Addition

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CCSS.6.NS.C.6A

If you have 2 groups of -3, what is the result?

• 5

• 6

• -6

• -5

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CCSS.7.NS.A.2A

CCSS.7.NS.A.2B

Why does 2 times -3 equal -6?

• Because 2 is positive

• Because -3 is negative

• Because there are two groups of -3

• Because multiplication always results in a negative

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CCSS.7.NS.A.2A

What is the result of multiplying -2 by -3?

• 6

• -6

• 5

• -5

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CCSS.7.NS.A.2A

CCSS.7.NS.A.2B

When multiplying two negative numbers, what is the result?

• Zero

• Positive

• Undefined

• Negative

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CCSS.7.NS.A.2A

CCSS.7.NS.A.2B

What does division mean in the context of this lesson?

• Subtracting groups

• Adding groups

• Combining groups

• Breaking into groups

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CCSS.3.OA.A.2

What is the result of dividing -8 by 2?

• 6

• -4

• -6

• 4

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CCSS.7.NS.A.2A

CCSS.7.NS.A.2B

What is the result of dividing -8 by -2?

• 6

• -6

• 4

• -4

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CCSS.7.NS.A.2A

CCSS.7.NS.A.2B

What is the result when the signs of the numbers being multiplied or divided are different?

• Positive

• Undefined

• Negative

• Zero

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CCSS.7.NS.A.2A

CCSS.7.NS.A.2B