Best Answer

denominator is means the number on the bottom of the fraction.

the numerator means the number on the top of the fraction

inthe fraction 3/4

3 would be the numerator

4 would be the denominator

User Avatar

Wiki User

โˆ™ 2011-02-24 20:59:26
This answer is:
User Avatar
Study guides


20 cards

A polynomial of degree zero is a constant term

The grouping method of factoring can still be used when only some of the terms share a common factor A True B False

The sum or difference of p and q is the of the x-term in the trinomial

A number a power of a variable or a product of the two is a monomial while a polynomial is the of monomials

See all cards

J's study guide

2 cards

What is the name of Steve on minecraft's name

What is love

See all cards

Steel Tip Darts Out Chart

96 cards





See all cards

Add your answer:

Earn +20 pts
Q: Why do fractions need to have acommon denomanator?
Write your answer...
Related questions

When you subtract fractions do they have to have the same denomanator?


What do you call a fraction with the same denomanator?

They are like fractions.

Do you change the denomanator if you multiply?

Yes, you multiply the numerators together and the denominators together when multiplying two fractions

How do you know when two fractions are equivalent?

You have to get a common denomanator to then work out if the numerator is also the same.

What does numanator and denomanator mean?

these terms are used to describe fractions. the numerator is the number ABOVE the line. and the denominator is the number BELOW the line.

What unites many people on earth?

Acommon faith

What is the least common denomanator of 85?

You need at least two numbers to find something in common.

How do you subtract mixed fractions by simple fractions?

You want to know? It's like that. First, if this question, like that: 1/9 + 2/8 = The denomanator, the bottom number is special. 9x1 =9 9x2= 18 and then on. also 8. We will need to check if any answers are the same. and find the LCD, like the Least denomantor. So the answer the same is. Divide it by the denomanator before, and times the numerator to find the numerator for each of the numbers. Then put the denomanator on the bottom and add it. To add it, the denomanator of the answer will be the same as the answer you found. Then, the numerator, the top number will be subtracted like normal. This is a easy way, but many steps. The add will be like that too! do these: 1/5 + 3/7= 2/7 - 5/8= Hope you enjoy! If you got them wrong, do these. 4/8 + 7/9 = 8/9 - 5/9

How do you add fractions using the least common denomanator?

Ok. First you make sure the denominator (bottom number) is the same on all the fractions. The easiest way to do this is to multiply the denominators together, then multiply each numerator by the opposite fractions denominator. This is the easiest way to do this, you will simplify later. ONLY DO THIS IF THE DENOMINATORS ARE DIFFERENT. If they are the same just add the numerators together to get your fraction. Then simplify.

Multiply rational fractions and mixed numbers?

EX: 3 3/4 x 4 4/10 first, you multiply 4x3, then you get 12 + 3=15/4 second, you multiply 10x4=40+4=44/10 then you multiply the denomanator by the denomanator and the numerator by the numerator. 15x44= 10x4= Then simplify your answer.

What is acommon field?

What is a common field

What is a fraction with a denomanator of 1 called?

A whole number.

Do you have to find a common denomanator when adding factions?


What is the lowest common denomanator of 9 and 3?


What is the lowest common denomanator of 8and 4?

8 is.

What is the common denomanator of 16 4 2?


How do you divide the improper fraction to mixed fraction?

you divide the numarator to the denomanator

What you need to add or subtract fractions?

You need a common denominator in order to add or subtract fractions.

Why do you convert unlike fractions?

Unlike fractions have denominators that are unequal, and therefore cannot be added or subtracted. If two fractions need to be added or subtracted they must first be converted to like fractions.

What is two rays that have acommon endpoint and form a line?


How do you divide fractions with a common denomanator?

In this particular case, you can eliminate the denominators, and just divide the numerators. In the general case, to divide a fraction by another fraction, multiply the first fraction by the reciprocal of the second fraction. For example, 6/5 divided by 2/5 = 6/5 x 5/2.

Do you need a common denominator for all fractions before doing the order of operations?

You DO need a common denominator to add, subtract, or compare fractions. You DO NOT need a common denominator to multiply or divide fractions.

How to estimate fractions?

To estimate fractions you need to determine what the nearest whole number is and round down or up. To find the exact number you need to convert the fractions to the same denominator.

Do you need common denominators when subtracting fractions?

Yes. You need common denominators if you want to:Add fractionsSubtract fractionsCompare fractions ("which is larger?")You do not need common denominators to multiply or divide fractions. Thus, in the case of fractions, multiplication and division is actually easier than addition and subtraction.

What are fraction that have same denominator called?

They are called like fractions.In order to add or subtract fractions you will usually need to convert them to like fractions. Then you simply add or subtract the numerators (as required) to form the numerator of the answer. The same (or common) denominator is the denominator of the answer. You may need to simplify the resulting fraction.