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Published byMay Glenn Modified over 5 years ago

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Adding Integers

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Zero Pair 1 + -1 = 0

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Why it works… __________ Property says you can add or subtract zero without changing the value of an expression. Identity

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-4 + 2

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8 + (-7)

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4 + 2

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-4 + (-2)

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3 + -3

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For homework, Kyle was adding integers. He looked at a computation and said, “I know the sign of the sum will be negative.” Based on Kyle’s statement, what do you know about the problem?

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Annie added three integers and got a sum of zero. What might the three integers have been?

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Let’s Think… What is ALWAYS true?

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Let’s Think… What rule can we make for adding integers?

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2 Most Important Rules to Remember 1.Same sign- Add, keep sign 2.Different sign- Subtract, keep sign of # with greater absolute value

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