 # Integers All whole numbers and their opposites including the number 0.

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Integers All whole numbers and their opposites including the number 0

Add and Subtract Integers

Rules If the signs on the numbers are the same……. Add the numbers If the signs on the numbers are different……. Subtract the numbers Use the sign on the biggest number for the sign in your answer

(-8) + (-9) = Adding (-5) + 11 = M + 8 Evaluate: When M = -12 -17 6 (-12) + 8 -4 (-1) + 15 + (-21) = 14 + (-21) or(-22) + 15 -7 +

Rules If the signs on the numbers are the same……. Add the numbers If the signs on the numbers are different……. Subtract the numbers Use the sign on the biggest number for the sign in your answer ** You must fix double negatives before you follow the rules above!!!!

- 7 - 7 = Subtracting 2 - (-4) = 3 – (-X) Evaluate: When X = -5 -14 6 3+ X-2 (-1) - 15 - (-21) = -16 + 21 = 5 3+ (-5)= + + +

Multiply and Divide Integers

Multiply (10) (5) = (10) (-5) = (-10) (5) = (-10) (-5) = 50 -50 50

Divide (10) ÷ (5) = (10) ÷ (-5) = (-10) ÷ (5) = (-10) ÷ (-5) = 2 -2 2

Rules A positive multiplied by a positive is a positive A positive multiplied by a negative is a negative A negative multiplied by a positive is a negative A negative multiplied by a negative is a positive + + = + + - = - - + = - - - = +

Rules A positive divided by a positive is a positive A positive divided by a negative is a negative A negative divided by a positive is a negative A negative divided by a negative is a positive + ÷ + = + + ÷ - = - - ÷ + = - - ÷ - = +

Integers All ______ ________and their _________ including the number ____

Rules If the signs on the numbers are the ________……. _______the numbers If the signs on the numbers are _______……. ________ the numbers Use the sign on the _____________ number for the sign in your answer

( ) + + ( ) or ( ) + + ( ) = ( ) + = ( ) + ( ) = Adding M + 8 Evaluate: When M =

Rules If the signs on the numbers are the _______……. _______ the numbers If the signs on the numbers are ________……. _________ the numbers Use the sign on the ____________ number for the sign in your answer ** You must fix ___________ negatives before you follow the rules above!!!!

+ ( )= + = - - = - ( ) = (- ) - - ( ) = 3 – (-X) Subtracting Evaluate: When X = 3 X

Multiply ( ) ( ) =

Divide ( ) ÷ ( ) =

Rules A positive multiplied by a positive is a positive A positive multiplied by a negative is a negative A negative multiplied by a positive is a negative A negative multiplied by a negative is a positive + + = + + - = - - + = - - - = +

Rules A positive divided by a positive is a positive A positive divided by a negative is a negative A negative divided by a positive is a negative A negative divided by a negative is a positive + ÷ + = + + ÷ - = - - ÷ + = - - ÷ - = +

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