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There are places where this term is used.

1st- to compare fractions across an equals you are multiplying each side by the product of the denominators. It looks like you multiply the numerator of the left side times the denominator of the right and put that product on the left side.

Multiply the numerator of the left times the denominator of the right and put that on the right. In algebra this is good when looking for an unknown.

2nd- when comparing fractions to see which one is bigger you can multiply up from the denominator to the other numerator and compare these numbers to see which one is bigger.

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Q: How does cross multiplying of fractions work?
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Related questions

Why does cross multiplying with fractions work?

When cross multiplying, finding the product of the means and extremes, you are technically getting a common denominator that reduces out.


Is it necessary to cross multiply when multiplying fractions?

No.


Do you cross simplify in multiplying fractions?

65


What does cross multiplyng mean?

Cross-multiplying is when you have two fractions, and you multiply the numerator of each fraction by the other fractions's denominator. In other words, if you have two fractions a/b and c/d, cross-multiplying would be finding a*d and b*c. If a/b=c/d, then ad = bc.


When multiplying fractions do you multlply to the side or cross multiply?

Multiplying fractions is the easiest operation you can do with them. Nothing complicated is required, just multiply the top two and the bottom two. Simple as that!


What is the definition of multiplying fractions?

definition of multiplying fractions?


Why does cross-multiplying work?

I dont know the answer


What is an algorithm for multiplying fractions?

Multiply straight across and cross reduce when necessary


What is cross canceling in dividing fractions?

Cross canceling is a way to simplify or reduce fractions before multiplying them. For example, 2/4 x 1/6 can be reduced to 1/4 x 1/3 by cross canceling.


Why does the butterfly method work when comparing fractions?

it works when comparing fractions by multiplying the fractions to see whitch one is greater not greater and equal


what is the meaning of multiplying fractions and where the rules comes from?

Multiplying fractions is all about division


How is multiplying rational numbers like multiplying fractions and multiplying decimals?

Fractions and decimals are usually rational numbers. Besides, multiplying rational and irrational numbers is also similar.