Mastering Positive and Negative Number Operations

The video tutorial reviews adding and subtracting positive and negative numbers using a number line. It introduces a method to visualize these operations by turning a pen in the direction indicated by the operation sign and moving forward or backward based on the number's sign. The tutorial includes several examples to illustrate the method, emphasizing the importance of understanding the direction and movement on the number line. The video aims to provide an alternative approach to solving these problems, which may be helpful for students who find the topic challenging.

Why is it important to review methods for adding and subtracting positive and negative numbers?

• Because it is easy to understand.

• Because it is not used often.

• Because it can be challenging and sometimes we haven't done it in a while.

• Because it is a new concept.

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CCSS.7.NS.A.1C

On a number line, which direction do positive numbers go?

• Up

• Right

• Down

• Left

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CCSS.6.NS.C.6C

If you start at 0 and add 2, where do you end up on the number line?

• At -2

• At 4

• At 0

• At 2

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CCSS.7.NS.A.1B

When subtracting a positive number, which direction do you turn your pen?

• Downwards

• Towards the positive side

• Towards the negative side

• Upwards

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CCSS.7.NS.A.1C

What is the result of 2 minus 3 on a number line?

• -1

• -2

• 1

• 0

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CCSS.7.NS.A.1B

If you start at 2 and add -4, where do you end up on the number line?

• At -2

• At 0

• At 2

• At 4

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CCSS.7.NS.A.1B

What is the result of -3 plus 6 on a number line?

• 3

• 0

• -3

• 6

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CCSS.7.NS.A.1B

When adding a negative number, which direction do you move on the number line?

• Forward

• Backward

• Upward

• Downward

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CCSS.7.NS.A.1C

What is the result of -3 minus 4 on a number line?

• 7

• 1

• -7

• -1

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CCSS.7.NS.A.1B

What is the result of 3 minus -2 on a number line?

• -1

• 5

• -5

• 1

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CCSS.7.NS.A.1B