Adding and Subtracting Integers. Vocabulary Negative sign –Left side of number line Positive sign –Right side of number line Operation –Action which produces.

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Presentation transcript:

Adding and Subtracting Integers

Vocabulary Negative sign –Left side of number line Positive sign –Right side of number line Operation –Action which produces a new value second term Negative sign, operation

Adding Integers Signs are the same –Add –Keep the sign = = -6

Adding Integers Signs are different –Subtract –Take sign of larger number = = +1

Subtracting Integers Subtracting –Instructions SCC First term –Stays the same Operation –Change to opposite Second term –Change the sign = = +7 Stay, - operation changes to +, - sign of second term changes to + Now you have an addition problem (check addition rules) –Signs are the same Add Keep sign

Practice Signs are the same Signs are different Use SCC = = = =