Subtracting Integers with Two-Color Counters

This video tutorial explains how to subtract integers using two-color counters, with yellow representing positive numbers and red representing negative numbers. The instructor demonstrates three examples: subtracting negative 3 from negative 4, subtracting positive 3 from negative 4 using zero pairs, and subtracting positive 5 from positive 2. The video emphasizes the importance of representing numbers correctly and using zero pairs to facilitate subtraction when necessary.

What colors are used to represent positive and negative numbers in the video?

• Orange and Purple

• Blue and Green

• Yellow and Red

• Black and White

Tags

CCSS.6.NS.C.6C

What should you write down in the corner of your page?

• The key for positive and negative numbers

• The date

• Your name

• The title of the video

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CCSS.RI.7.3

CCSS.RI.7.5

CCSS.RI.8.3

CCSS.RI.9-10.3

CCSS.RI.9-10.5

In the first example, what is the result of subtracting negative 3 from negative 4?

• Negative 1

• Zero

• Negative 7

• Positive 1

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CCSS.7.NS.A.1C

When subtracting positive 3 from negative 4, what do you need to use to represent negative 4 differently?

• Color pairs

• Negative pairs

• Zero pairs

• Positive pairs

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CCSS.7.NS.A.1B

What is the final result of subtracting positive 3 from negative 4?

• Positive 3

• Negative 7

• Negative 4

• Negative 1

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CCSS.7.NS.A.1C

What is a zero pair in the context of this video?

• A pair of two positive counters

• A pair of positive counters

• A pair of negative counters

• A pair of one positive and one negative counter

Tags

CCSS.7.NS.A.1B

In the third example, what is the initial representation of positive 2?

• Three red counters

• Two yellow counters

• Two red counters

• Three yellow counters

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CCSS.7.NS.A.1C

What is the result of subtracting positive 5 from positive 2?

• Negative 7

• Positive 7

• Negative 3

• Positive 3

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CCSS.7.NS.A.1C

What should you do if you cannot remove the required number of counters directly?

• Use zero pairs to represent the number differently

• Change the color of the counters

• Skip the subtraction

• Add more counters of the same color

Tags

CCSS.7.NS.A.1C

What is the key takeaway from the examples provided in the video?

• All subtractions are straightforward

• Different subtractions may require different approaches

• Negative numbers cannot be subtracted

• Only positive numbers can be subtracted

Tags

CCSS.7.NS.A.1C