Modeling Addition of Integers

Which addition equation matches the problem modeled below? (Yellow is positive and Red is negative)

• -2 + -4 = -6

• 2 + -4 = -2

• 4 + 2 = 6

Which equation represents the 2-color counters shown in the image? (Yellow is Positive and Red is Negative)

• -4 + 5 = -1

• 4 + 5 = 9

• 4 + (-5)= -1

• -5 - 4 = -9

• 4 + 1 = 5
• 4 - (-1) = 5
• 4 + -1 = 3

Which counter set models the expression -4 + 5?

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Which counter set models the expression -6 + 6?

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Which counter set models the expression 2 + (-5)?

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Which counter set models the expression -3 + 7?

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Which number line models the expression -2 + 4?

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Which number line models the expression 4 + (-5)?

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Which number line models the expression 3 + (-4)?

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