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Published byQuinn Osman Modified over 2 years ago

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Inverse Operations

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How do we undo an operation? If I owe Brandie $1 then how can I get rid of my debt? What math operation would you use to do that?

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How do we undo an operation? If I have 8 slugs. How do I get rid of them? What math operation would you use to do that?

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If each student in the class gave Ms. Spangler 2 pencils (5x2) so she has 10 pencils total. How do I give back, or distributed, evenly those pencils? What math operation would you use?

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Inverse operations

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NAME THAT OPPOSITE! IT’s OK to yell out!! +

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NAME THAT OPPOSITE! IT’s OK to yell out!! -

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NAME THAT OPPOSITE! IT’s OK to yell out!! x

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NAME THAT OPPOSITE!

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IT’s OK to yell out!! x

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NAME THAT OPPOSITE! IT’s OK to yell out!! -

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NAME THAT OPPOSITE!

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IT’s OK to yell out!! +

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So lets undo some operations +12 -12 =0

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So lets undo some operations -6 +6 =0

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So lets undo some operations x6 =1

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Remember when we add or subtract 0 from an equation it doesn’t change the equation. 5 + 0 = 5 14 - 0 Remember when we multiply

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So lets undo some operations +4

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So lets undo some operations

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-4

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Learning to Balance Equations Online Problem Algeblocks Draw problems out.

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Math Steps Steps: Draw Line down Equal sign Find the number on the same side as the variable How is the number connected to the variable (+, -, /, x) Do the inverse to BOTH SIDES Solve!

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Apply to Algebraic Equations 15 + x = 25 + So we are going to + or – These are the 2 equations we will solve. 0 + x = 10 x = 10 -15

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Apply to Algebraic Equations - 3 + x = 25 + So we are going to + or – These are the 2 equations we will solve. 0 + x = 28 x = 28 +3

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Apply to Algebraic Equations 1x = 6 x = 6 x3

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Apply to Algebraic Equations 5 - z = 25 + So we are going to x or / These are the 2 equations we will solve. 0 - z = 20 - z = 5 -5 x(-1) z = -5

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Name:______________________ Date:______________________ TEST

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