Mastering Addition and Subtraction of Integers

Why is it important to understand how to add and subtract positive and negative numbers without a calculator?

• Because calculators are unreliable.

• Because it is a basic life skill.

• Because it helps in mental math skills.

• Because calculators are not allowed in certain tests.

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CCSS.7.NS.A.1C

How can you think about negative numbers to make them easier to understand?

• As money you owe.

• As money you have.

• As temperatures.

• As points in a game.

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CCSS.6.NS.C.5

If you owe one person $7 and another person $7, what is your total debt?

• $14

• $7

• $-14

• $0

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CCSS.7.NS.A.1A

What is the result of -7 + (-7)?

• 14

• 7

• 0

• -14

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CCSS.7.NS.A.1C

If you owe $7 and borrow another $7, what is your total debt?

• $0

• $-14

• $7

• $-7

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CCSS.6.NS.C.5

What happens when you subtract a negative number?

• It becomes zero.

• It remains a negative number.

• It turns into an addition problem.

• It becomes a positive number.

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CCSS.7.NS.A.1C

What is the result of -7 - (-7)?

• -7

• 14

• 7

• 0

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CCSS.7.NS.A.1C

What is the result of 7 + 7?

• 0

• 14

• 7

• -14

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CCSS.7.NS.A.1B

What is the result of -7 + 7?

• 14

• -7

• 7

• 0

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CCSS.7.NS.A.1B

What is essential for mastering the addition and subtraction of negative numbers?

• Watching videos.

• Getting a lot of practice.

• Reading books.

• Using a calculator.

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CCSS.7.NS.A.1B