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Integer Rules

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Integer Rules

Adding Integers

(+) + (+) = (+)

A positive plus a positive is positive.

(-) + (-) = (-)

A negative plus a negative is negative.

(+) + (-) = subtract and use the sign of the larger integer

Integer Rules

Subtracting Integers

Subtracting integers is really “adding the opposite!”

Follow the following rules:

1st integer stays the same

Change minus sign to a plus sign

Use the opposite of the second integer

Follow rules for addition of integers

Integer Rules

Multiplication and Division of Integers

Same Signs = Answer is Positive

(+) x/÷ (+) = (+)

(-) x/÷ (-) = (+)

Different Signs = Answer is Negative

(+) x/÷ (-) = (-)

Integer Rules

Using Manipulatives to Solve Integer Problems

Red/Yellow Counter Activity

Red – negative; Yellow - positive

Integer Card Game

Red – negative; Black - positive