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Published byXavier Donovan Modified over 2 years ago

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What two numbers will give you a product of 64 and a quotient of 4?

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16 and 4 16 x 4 = ÷ 4 = 4

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Adding Integers We can use positive and negative counters to model the addition of integers. Positive IntegerNegative Integer A positive integer paired with a negative integer form a zero pair. The value of a zero pair is 0.

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Add -2 + (-4)= -6

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Add 5 + 6= 11

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Add -3 + (-5) = -8

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Add = -5

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Do you notice a pattern or rule? Adding Integers with like signs. - When the signs are the same, add the numbers together and keep the sign.

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Add Remove all the zero pairs. = -2

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Add 4 + (-1) = 3 Remove all the zero pairs.

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Add Remove all the zero pairs. = -1

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Add 3 + (-7) Remove all the zero pairs. = -4

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Did you notice a pattern or rule? Adding integers with unlike signs. - When the signs are different, subtract the integers and keep the sign of the larger digit.

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Lets try a few examples using the rules for adding integers. 1) = 2) = 3) 13 + (-19) = 4) = 5) = 6) (-16) = 7) 18 + (-5) =

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Adding Integers with like signs. - When the signs are the same, add the numbers together and keep the sign = -12 Adding integers with unlike signs. - When the signs are different, subtract the integers and keep the sign of the larger integer = -6

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Homework: Lesson 3-4 #2-22 evens

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