Multiplying Integers with Counters

The video tutorial explains how to multiply integers using counters. It covers multiplying positive and negative integers, demonstrating with examples like 3 * 2, 3 * -2, -3 * 2, and -3 * -2. The tutorial uses yellow and red counters to represent positive and negative values, respectively. It also introduces the concept of zero pairs to help visualize the removal of groups when dealing with negative multipliers. By the end, viewers should understand how to multiply integers and the effect of positive and negative signs in multiplication.

What is the purpose of using counters in this tutorial?

• To show subtraction of integers

• To illustrate multiplication of integers

• To demonstrate division of integers

• To explain addition of integers

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How many positive counters result from multiplying 3 by 2?

• 3

• 6

• 9

• 12

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What is the result of 3 multiplied by -2?

• 3

• -3

• 6

• -6

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CCSS.7.NS.A.2A

CCSS.7.NS.A.2B

In the context of this tutorial, what does a negative first number signify?

• Adding groups

• Multiplying by zero

• Removing groups

• Creating zero pairs

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CCSS.7.NS.A.1B

What outcome do we get when we remove three groups of two?

• Zero

• Positive 6

• Positive 3

• Negative 6

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CCSS.7.NS.A.1B

How many groups of zero pairs are used to demonstrate -3 * 2?

• Three

• Six

• Two

• Four

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CCSS.7.NS.A.2A

How are zero pairs used in multiplying negative numbers?

• To make the multiplication visible

• To divide the groups

• To represent subtraction

• To add more groups

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CCSS.7.NS.A.2B

What does -3 * -2 equal to?

• Negative 6

• Negative 3

• Positive 6

• Zero

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CCSS.7.NS.A.2A

CCSS.7.NS.A.2B

What does the presence of yellow counters signify?

• Subtraction of groups

• Zero pairs

• Positive numbers

• Negative numbers

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What is the result of removing three groups of -2?

• Negative 6

• Positive 3

• Negative 3

• Positive 6

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CCSS.7.NS.A.2A

CCSS.7.NS.A.2B