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Published byEmory Harrington Modified over 6 years ago

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ADDING INTEGERS Positive + Positive = Positive Positive + Positive = Positive ( +3) + (+2) = +5 ( +3) + (+2) = +5 When a number is positive, you do not have to use the (+) sign. When a number is positive, you do not have to use the (+) sign. (+3) + (+2) = 5 (+3) + (+2) = 5

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ADDING TWO NEGATIVE NUMBERS Negative + Negative = Negative Negative + Negative = Negative (- 6) + (- 3) = - 9 (- 6) + (- 3) = - 9 When a number is NEGATIVE, you do have to use the (-) sign. When a number is NEGATIVE, you do have to use the (-) sign.

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ADDING POSITIVE AND NEGATIVE INTEGERS Sum of a negative and a positive number - Keep the sign of the larger number and subtract Sum of a negative and a positive number - Keep the sign of the larger number and subtract EXAMPLE 1: EXAMPLE 1: (- 6) + 3 = -3 COPY DOWN QUESTION

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ADDING POSITIVE AND NEGATIVE INTEGERS Sum of a negative and a positive number - Keep the sign of the larger number and subtract Sum of a negative and a positive number - Keep the sign of the larger number and subtract EXAMPLE 1: EXAMPLE 1: (- 6) + 3 = -3 COPY DOWN QUESTION 6 – 3 = 3 Subtract the numbers without negative signs.

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ADDING POSITIVE AND NEGATIVE INTEGERS Sum of a negative and a positive number - Keep the sign of the larger number and subtract Sum of a negative and a positive number - Keep the sign of the larger number and subtract EXAMPLE 1: EXAMPLE 1: (- 6) + 3 = -3 COPY DOWN QUESTION 6 – 3 = 3 Subtract the numbers without negative signs. = -3 Keep the sign of the larger number.

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ADDING POSITIVE AND NEGATIVE INTEGERS Sum of a negative and a positive number - Keep the sign of the larger number and subtract Sum of a negative and a positive number - Keep the sign of the larger number and subtract EXAMPLE 2: EXAMPLE 2: 9 + (-12) = - 3 COPY DOWN QUESTION

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ADDING POSITIVE AND NEGATIVE INTEGERS Sum of a negative and a positive number - Keep the sign of the larger number and subtract Sum of a negative and a positive number - Keep the sign of the larger number and subtract EXAMPLE 2: EXAMPLE 2: 9 + (-12) = - 3 COPY DOWN QUESTION 12 – 9 = 3 Subtract the numbers without negative signs.

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ADDING POSITIVE AND NEGATIVE INTEGERS Sum of a negative and a positive number - Keep the sign of the larger number and subtract Sum of a negative and a positive number - Keep the sign of the larger number and subtract EXAMPLE 2: EXAMPLE 2: 9 + (-12) = - 3 COPY DOWN QUESTION 12 – 9 = 3 Subtract the numbers without negative signs. = -3 Keep the sign of the larger number.

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ADDING POSITIVE AND NEGATIVE INTEGERS Sum of a negative and a positive number - Keep the sign of the larger number and subtract Sum of a negative and a positive number - Keep the sign of the larger number and subtract EXAMPLE 3: EXAMPLE 3: (- 5) + 7 = 2 COPY DOWN QUESTION

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ADDING POSITIVE AND NEGATIVE INTEGERS Sum of a negative and a positive number - Keep the sign of the larger number and subtract Sum of a negative and a positive number - Keep the sign of the larger number and subtract EXAMPLE 3: EXAMPLE 3: (- 5) + 7 = 2 COPY DOWN QUESTION 7 – 5 = 2 Subtract the numbers without negative signs.

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ADDING POSITIVE AND NEGATIVE INTEGERS Sum of a negative and a positive number - Keep the sign of the larger number and subtract Sum of a negative and a positive number - Keep the sign of the larger number and subtract EXAMPLE 3: EXAMPLE 3: (- 5) + 7 = 2 COPY DOWN QUESTION 7 – 5 = 2 Subtract the numbers without negative signs. = 2 Keep the sign of the larger number.

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Remember For Addition: When the signs are the same, add and keep the sign: When the signs are the same, add and keep the sign: 2+2= 4 2+2= 4 -2+(-2)= -4 -2+(-2)= -4 When the signs are different, subtract and keep the sign of the larger number: When the signs are different, subtract and keep the sign of the larger number: 6+(-2)= 6+(-2)= -6+2= -6+2=

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