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Mainly when you divide by a fraction - that is equivalent to multiplying by its reciprocal.

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12y ago
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1y ago

You take the reciprocal of a fraction when you want to invert the numerator and the denominator. The reciprocal of a fraction is found by flipping the fraction upside down. For example, the reciprocal of 2/3 is 3/2.

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Q: When do you take the reciprocal of a fraction?
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What is the reciprocal of -p over 4?

Reciprocal just means that you flip the fraction... your fraction is -p/4 the reciprocal is 4/-p the reciprocal is extremely important when dividing fractions. because when you divide fractions you have to take the reciprocal of the bottom fraction and then multiply it to your top fraction to get your answer.


Why do you take the reciprocal of the second fraction when dividing?

Because division by a number (the second fraction) is the same as multiplication by its reciprocal.


What is the reciprocal of five ninth?

To take the reciprocal of a fraction, exchange numerator and denominator. Thus, the reciprocal of 5/9 is 9/5.


What is the reciprocal of a negative fraction?

Answer: -a/b is a fraction, its reciprocal is -b/a Why: Let's look at what reciprocal does. Take a fraction like 1/3 and its reciprocal is 3 . That is 1/ (1/3) and if we multiply the number by its reciprocal we get one. So now take -1/3. The question is whether the reciprocal is 3 or -3. If we multiply - 1/3 by 3 we have -1 and if we multiply it by -3 we have 1. The reciprocal of a positive or negative fraction is obtained by switching its numerator and denominator, the sign of the new fraction remains the same. So the answer is -3 and just as with positive fractions, we have the number multiplied by its reciprocal is 1


What is a reciprocal of a fraction?

A reciprocal of a fraction is when you interchange the numerator and the denominator.Example:3/5: reciprocal = 5/3The reciprocal of a fraction is when you interchange the numerator and the denominator.Example:3/5: reciprocal = 5/3


When multiplying a nonzero fraction by its reciprocal the product is call?

When you multiply a nonzero fraction by its reciprocal you get 1. Take this example.Lets say you have a fraction called (a/b). The reciprocal of that fraction would be (b/a). If you multiply the two you'd get (a/b)*(b/a)=(ab/ab). Anything divided by itself is 1.


What ia a reciprocal fraction?

The reciprocal of the fraction is simply the fraction raised to the -1 power. Simply "flip the fraction upside down" to find the reciprocal. e.g. 3/23 has a reciprocal of 23/3.


How are reciprocals used when dividing fractions?

When dividing fractions, take the reciprocal of the second fraction, and multiply the first fraction by the reciprocal of the second fraction. Example: (a/b)/(c/d)=(a/b)*(d/c)


What is the reciprocal of twelve percent?

Twelve percent is equivalent to the fraction 12/100. To find the reciprocal of a number, you take its fraction form and switch the numerator (top) and denominator (bottom). So the reciprocal of 12% is 100/12.


Do you have to reciprocal with fractions?

no "to reciprocal" is meaningless. If you mean can you take a reciprocal of a fraction, then the reciprocal of 5/97, for example, is 97/5 in just the same way that the reciprocal of 2 (think of 2/1) is 1/2.


Do you find the reciprocal in a fraction multiplication?

To get the reciprocal of a fraction, exchange the numerator and denominator.


How do you divide a reciprocal fraction?

multiply by the reciprocal