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Section 2.2 ADDING REAL NUMBERS

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Algebra tiles can be used to add or subtract integers. Remember integers are.

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Example 1: Use algebra tiles to represent = = = =

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Neutral pairs have a value of _____. zero = 0

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Example 2: A. Use algebra tiles to represent and then cross out any neutral pairs. +=

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B. Use algebra tiles to represent and then cross out any neutral pairs. ==

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C. Use algebra tiles to represent and then cross out any neutral pairs.

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D. Use algebra tiles to represent and then cross out any neutral pairs. =

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E. Use algebra tiles to represent and then cross out any neutral pairs. There are no neutral pairs =

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F. Use algebra tiles to represent and then cross out any neutral pairs. There are no neutral pairs =

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Rules For Adding Two Signed Numbers: A. Signs are the same – 1.______________________________________ 2.______________________________________ Add the numbers Take the given sign B. Signs are the different – 1.______________________________________ 2.______________________________________ Subtract the numbers Take the sign of the larger number

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Example 3: Find each sum. A. B. C. Signs are the same Signs are different Signs are different Try these… Find each sum. A. B. C.

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Example 4: Find each sum. A. B. C. D

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Try these… Find each sum. A. B. C. D.

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