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Published byMyrtle Bradford Modified over 9 years ago
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Divide Rational Numbers. Objective The student will be able to:
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Dividing Rules 1) If the numbers have the same signs then the quotient is positive. -32 ÷ (-8 )= 4 2) If the numbers have different signs then the quotient is negative. 81 ÷ (-9) = -9
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When dividing two negative numbers, the quotient is positive. 1.True 2.False Answer Now
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When dividing a negative number and a positive number, use the sign of the larger number. 1.True 2.False Answer Now
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The reciprocal of is where a and b 0. The reciprocal of a number is called its multiplicative inverse. A number multiplied by its reciprocal/multiplicative inverse is ALWAYS equal to 1.
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Example #1The reciprocal of is Example #2 The reciprocal of -3 is
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Basically, you are flipping the fraction! We will use the multiplicative inverses for dividing fractions.
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Which statement is false about reciprocals? 1.Reciprocals are also called additive inverses 2.A number and its reciprocal have same signs 3.If you flip a number, you get the reciprocal 4.The product of a number and its reciprocal is 1 Answer Now
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When dividing fractions, change division to multiplying by the reciprocal. Examples 1)
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2)
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What is the quotient of -21 ÷ -3? 1.18 2.-18 3.7 4.-7 Answer Now
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