Applied Algebra B Lesson: 2 – 3 Adding Integers Objective: Learn to add integers.

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Presentation transcript:

Applied Algebra B Lesson: 2 – 3 Adding Integers Objective: Learn to add integers.

Adding Integers Like Signs Add numbers and keep the sign = 7 -6 – 8 = -14 Unlike Signs Subtract numbers, take the sign of the bigger number = 7 5 – 13 = -8

Find each Sum = (-2) = = (-8) = = = 3

Find each Sum 5 + (-3) = (-6) = = = (-10) = =17

Opposites Also called Additive Inverses or Zero Pair Examples 3 & = 0 or 3 – 3 = & = 0 or 10 – 10 = 0

Property Additive Inverse Property The sum of any number and its additive inverse is 0.

Simplify each expression 5x + (-3x) = 2x -8y + 3y = -5y 6m + 4m + (-2m) = 8m -5x + 4x = -x (or -1x)

Homework Pg – 72 E