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Answered 2011-03-10 21:07:33


When multiplying and dividing fractions your denominators do not have to be the same.

The denominators only haveto be the same if you are subtracting or adding them.

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What do you do when you mutpiling fractions with common dennmonters?

Exactly the same as you do when multiplying fractions with different denominators. -- Multiply numerators . . . the product is the numeratore of the answer. -- Multiply denominators . . . the product is the denominator of the answer.

What does it mean to multiply and divide fractions?

multiply and divide fractions!-.-

How is multiplying mixed numbers different than multiplying fractions?

if you have mixed numbers you make them into improper fractions before you multiply

How can you use models to multiply fractions?

No, you cannot use models to multiply fractions!!

How do you find volume with fractions?

You multiply the fractions

What is the difference between cross and across?

When you add or subtract fractions you cross multiply and when you multiply or divide fractions you across multiply.

Do you multiply the denominator when you multiply fractions?

Yes you do.

How do you add two fractions with a different denominator?

You add two fractions with a different denominator by multiplying the denominators by a number that will make them equal. Be sure to multiply the numerator by that number too.

Why do you invert fractions?

When you divide by fractions, you invert and multiply.

How do you multiply and divide dissimilar fractions?

The dissimilarity of the fractions doesn't matter. To multiply two fractions, multiply the numerators together, then the denominators, then put the new numerator over the new denominator. Simplify if you can. To divide fractions, invert the second fraction and multiply as just described.

When you multiply fractions do you multiply the denominator?

yes. you multiply the numerator and denominator

How do you multiply a fractions with different exponents by an exponent?

Uranus's gravity is far stronger than earths.

How is dividing fractions different from multiplying fractions?

(3/4) x (5/9) = (3x5)/(4x9) = 15/36, that is when you multiply fractions, you multiply the numerators and form the numerator of the result and multiply the denominators and form the denominator of the result (3/4) / (5/9) = (3/4) x (9/5) = 27/20, that is when you divide fractions, you first invert the fraction by which you are dividing and then multiply the numerators and form the numerator of the result and multiply the denominators and form the denominator of the result

When you multiply fractions do you multiply the bottom numbers too?


Do you ever multiply a fraction?

Yes, there are times when you multiply fractions.

How do you multiply fractions that have the same denominator?

you don't do anything. you just multiply it together unless on the numerator you can reduce it with one of the denominators. ================================= On the remote chance that perhaps you find the first answer unclear, here's another explanation: To multiply two fractions: -- Multiply their numerators. That product is the numerator of the answer. -- Multiply their denominators. That product is the denominator of the answer. -- Now you have the answer. It may be possible to simplify it (reduce it to lower terms). It's not necessary for the original two fractions to have the same denominator. Just follow the same two easy steps to multiply the fractions, whether their denominators are the same or different.

How can one multiply fractions without a calculator?

You multiply the numerators across and put that as the numerator of your answer, then multiply the denominators of the fractions across the put that as the denominator of your answer. It is very easy.

What is a definition for ordering fractions?

to order fractions you can cross multiply two fractions at a time or you can convert all the fractions into decimals.

How do you multiply fractions with different denominators?

To multiply fractions, multiply the numerators together and the denominators together. For fractions a/b and c/d, the answer will be (a x c) / (b x d). Then simplify if possible. Numerical example : 2/5 x 3/8 = (2 x 3)/ (5 x 8) = 6/40 which equals 3/20

How do you Multiply 3 fractions?

Multiply the first two together and then multiply that total by the third.

What are the rules of the dissimilar fractions?

I assume you mean, with different denominators. If you want to add the fractions, subtract them, or compare them (determine which one is greater), you have to convert them to similar fractions (fractions with the same denominator) first. Converting to similar fractions is not necessary, and usually doesn't even help, if you want to multiply or divide fractions.

To multiply fractions do you have to have the same denominator?


Do you have to have a common denominator to multiply fractions?


When You Multiply Fractions do you change the denominator?


Do you multiply the common denominator in fractions?

you do not do that