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Published byAldous Carroll Modified over 9 years ago

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One step equations using multiplication and division

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ONE STEP EQUATIONS What you do to one side of the equation must also be done to the other side to keep it balanced. An equation is like a balance scale because it shows that two quantities are equal.

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One way to solve an equation is to use inverse operations. An inverse operation is an operation that “undoes” another operation. Operation Inverse Operation AdditionSubtraction Addition Multiplication Division

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1) Solve. -5t = 60 To get the variable by itself, which number needs to be moved? -5 To move the -5, you have to do the opposite operation. What operation will we use? division

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1) Solve -5t = 60 -5 -5 t = -12 -5(-12) = 60 1.Draw “the river” to separate the equation into 2 sides 2.Divide both sides by -5 3.Check your answer

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2) Solve 15 = 6n 6 6 2.5 = n 15 = 6(2.5) 1.Draw “the river” 2.Divide both sides by 6 3.Check your answer

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3) Solve -3v = -129 1.v = -126 2.v = -43 3.v = 43 4.v = 126 Answer Now

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4) Solve You don’t like fractions? Let’s get rid of them! “Clear the fraction” by multiplying both sides of the equation by the denominator.

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4) Solve 4 · · 4 x = -48 1.Draw “the river” 2.Clear the fraction – multiply both sides by 4 3.Check your answer

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4) Solve -15 · · · (-15) x = 450 1.Draw “the river” 2.Clear the fraction multiply both sides by -15 3.Check your answer

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Practice: Worksheet

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