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cross multiply

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Q: What is it called when you multiply the numerator of one fraction by the the denominator of another?
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Related questions

When you multiply each numerator of a fraction by the denominator of another fraction in a proportion you?

You get the same answer both times.


How can we find the same fraction as another one?

Multiply the numerator and the denominator by the same integer.


When you multiply a denominator do you multiplicate the numerator?

That depends what you want to do. If you multiply both the numerator and the denominator by the same number, you get another fraction that stands for the same number - an equivalent fraction. For example, if you have the fraction 1/2, you multiply top and bottom by 2, to get 2/4. 2/4 is simply another name for 1/2.


What does Cross multiplication mean?

Cross multiplication is when you multiply the denominator of a fraction by the numerator of another fraction. Before you cross multiply you want to see if you can simply the fractions.


How do you simplify a fraction then write it as a decimal?

simply divide the numerator and denominator by two. if they are not even, find another multiple that fits both the numerator and denominator. once you have simplified the fraction, just turn the denominator into 100 (make sure you multiply or divide only) then multiply or divide the same number by the numerator, then you divide it by 100 and you get your answer!!!!!


How do you find an equivalant fraction?

multiply the numerator and the denominator by a number.* * * * *by the same, non-zero number.Multiply both the numerator and denominator by a number of your choice. If both numbers are divisible by the same number, you should divide.


How do you find find equivlant fractions?

Multiply both the numerator and the denominator of the fraction you already have by the same number, and you'll get another fraction that's equivalent to it.


What is the invert and multiply rule in mathematics?

You may be referring to the rule for dividing fractions. To divide one fraction by another, you invert the second fraction (exchange numerator and denominator), and multiply instead.


What is another equivalent fraction for 4 over 28?

equivalent of 4 over 28 is 1 over 7. you divide by 4 both numerator and denominator or multiply by the same number both numerator and denominator


How do you find a fraction with the same denominator?

Simply change the numerator and you will have another - different - fraction wit the same denominator.


Why can you multiply a fraction by another fraction that has the same numerator and denominator and get a fraction that names the same amount as the original fraction?

You cannot because it is not true - unless the fraction is 0/n (for any n) or n/n = 1.


What the algorithm for dividing 2 fraction?

If you mean to divide one fraction by another, the easiest is to multiply your numerator fraction by the reciprocal of your denominator fraction. For example, if: x = (a / b) / (c / d) then: x = (ad)/(bc)