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Adding Integers

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The Number Line Integers = {…, -2, -1, 0, 1, 2, …} -505

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Addition Rule 1) When the signs are the same, ADD and keep the sign. (-2) + (-4) = -6 2) When the signs are different, SUBTRACT and use the sign of the larger number. (-2) + 4 = 2 2 + (-4) = -2

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Song Addition Rule: Sung to the tune of “Row, row, row, your boat” Same signs add and keep, different signs subtract, keep the sign of the higher number, then it will be exact!

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Another way to Add Integers Is With a Number Line 0123456-2-3-4-5-6 When the number is positive count to the right. When the number is negative count to the left. +-

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One Way to Add Integers Is With a Number Line 0123456-2-3-4-5-6 + - 3 + -5 =-2

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One Way to Add Integers Is With a Number Line 0123456-2-3-4-5-6 - + -3 + 7 =+4

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One Way to Add Integers Is With a Number Line 0123456-2-3-4-5-6 - - -4 + -2 =-6

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Examples: Use the number line if necessary. 4 2) (-1) + (-3) = -4 3) 5 + (-7) = -2 1) (-4) + 8 =

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-1 + 3 = ? 1.-4 2.-2 3.2 4.4 Answer Now

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-6 + (-3) = ? 1.-9 2.-3 3.3 4.9 Answer Now

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