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Answered 2009-02-28 17:20:13

multiply by the reciprocal

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When do you take the reciprocal of a fraction?

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


When you divide one fraction and another why do you have to turn it into a reciprocal?

To divide by a fraction, you multiply by its reciprocal. This is related to the facts that (1) division is the opposite of multiplication, and (2) a reciprocal is the multiplicative "opposite" of a number.


Why do you need a reciprocal when you divide a fraction?

You do not need it! Sometimes it is simpler to multiply by a number's reciprocal than to divide by it but that is not always the case.


How do you devide a fraction with a mixed number?

*divide transform the mixed number into a fraction and then divide like a normal fraction (multiply by reciprocal).


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.


How can you dvide fractions?

To divide a fraction by a fraction, multiply the first fraction by the reciprocal of the second one.


How do you divide a unit fraction by a whole number?

Multiply by the reciprocal.


How do you divide a negative number by a positive fraction?

You multiply the negative number by the reciprocal of the fraction.


2 divided by 7 over 8?

If you mean to divide 2 by the fraction 7/8, that is the same as multiplying with the reciprocal: 2 x 8/7.If you mean to divide 2 by the fraction 7/8, that is the same as multiplying with the reciprocal: 2 x 8/7.If you mean to divide 2 by the fraction 7/8, that is the same as multiplying with the reciprocal: 2 x 8/7.If you mean to divide 2 by the fraction 7/8, that is the same as multiplying with the reciprocal: 2 x 8/7.


Why is it that we don't divide on a dividing fraction?

It's easier to multiply the reciprocal.


How do you use a reciprical to divide a number by a fraction?

Division is multiply by the reciprocal.


What is 5 divided by one eighth?

To divide by a fraction, you multiply with its reciprocal.


How do you Divide fraction by another fraction?

One simple way is to flip the second fraction over (use its reciprocal) and multiply them.


What is the reciprocal of a number?

the reciprocal of a number is 1 divided by the number. if you want to find the reciprocal of a fraction you would need to swap the fraction numbers around and then multiply by 1. and then divide the answer.It is 1 divided by the number.


How do you divide whole numbers by fractions?

Mutiply the whole number by the reciprocal of the fraction.


How can you use multiplication to divide one fraction by another?

To divide two fractions, multiply the first by the reciprocal of the second.


Why do you turn the fraction upside down and multiply?

Dividing by a fraction is equivalent to multiplying by its reciprocal. A reciprocal fraction is effectively "turning it upside-down". So, to divide by a faction, you should do as stated; turn the fraction upside-down and multiply.


How can you divide by a fraction example?

To divide by a fraction, multiply by that fraction's reciprocal. 2/3 divided by 3/4 = 2/3 x 4/3


When dividing by a fraction can you multiply by its reciprocal?

That is correct. To divide by a half, you are actually multiplying by two. ■


How do you divide mixed number with a proper fraction?

turn the fraction upside down and multiplyConvert the mixed number to an improper fraction and multiply it by the reciprocal of the fraction.


What is three diveed by one fourth?

To divide by a fraction, you multiply by its reciprocal. The reciprocal of ¼ is 4, so 3 ÷ ¼ = 3 x 4 = 12


When you divide by a fraction why does the quotient get larger?

When you divide by a fraction, you are multiplying by it's reciprocal or opposite. So if you are dividing by 1/2, it is the same thing as multiplying by 2/1.


How do you divide fractions then reduce it?

To divide a fraction by a second fraction, multiply the first fraction by the reciprocal of the second fraction. For example, 1/2 divided by 5/7 is the same as 1/2 times 7/5.


How do you find the reciprocal?

The reciprocal of a number is what the original number is multiplied by to get 1. To find this you can simply divide 1 by the number you want the reciprocal for or, if the number is in fraction form, switch the denominator and numerator.


How do you divide fractions with mixed numbers?

You turn the mixed number into an improper fraction then multiply by the reciprocal.