answersLogoWhite

0


Best Answer

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

User Avatar

Wiki User

โˆ™ 2011-06-01 01:41:05
This answer is:
๐Ÿ™
0
๐Ÿคจ
0
๐Ÿ˜ฎ
0
User Avatar
Study guides
๐Ÿ““
See all Study Guides
โœ๏ธ
Create a Study Guide

Add your answer:

Earn +20 pts
Q: What you need to add or subtract fractions?
Write your answer...
Submit
Related questions

How do you add and subtract dissimilar fractions?

Make the fractions equivalent then subtract


Do you need to add whole numbers when subtracting fractions?

add? dont you mean subtract?


How are lcm's used in adding or subtracting fractions?

To add and subtract fractions, you need common denominators. To find the common denominator, take the LCM of the denominators you wish to add or subtract.


How do you add and subtract fractions with the same denominator?

it stay the same when you subtract fractions and when you add fractions.


Why do fractions need to have a common denominator before add or subtract them?

because it would be diffcult to understand.[you don't add or subtract the demonters]


How is finding the LCM revelant when adding and subtracting fractions?

To add and subtract fractions, you need common denominators. To find the common denominator, find the LCM of the denominators you wish to add or subtract.


Why do you need HCF and LCM?

The LCM will help you add and subtract fractions. The GCF will help you simplify fractions.


Do you add and subtract like and unlike fractions in the same way?

no, to add and subtract like and unlike fractions the denominator has to be the same,


What are compatible numbers for fractions?

I am not entirely sure what you mean, but if you need to add, subtract, or compare two fractions, they need to have the same denominator.


How do you add two fractions that have like denominators?

In fractions, you can NEVER add or subtract


Why do you calculate the LCM?

You will need to find the LCM in order to add and subtract fractions.


Why do you need to use common denominator?

To get the right answer when you add or subtract unlike fractions.


Why you need LCM and HCF in maths?

The LCM will help you add and subtract fractions. The GCF will help you simplify fractions.


Why are two fractions converted into like fractions?

Because you can't add or subtract fractions that have different denominators. Making them like fractions, by multiplying so the denominators are the same, you can add and/or subtract them.


How do you add and subtract fractions in math?

You need common denominators. Then add or subtract the numerators. If the answer is an improper fraction it is common practice to reduce it to a mixed number.


Why do fractions need to have common denominator before you add or subtract them simple answer pleas?

So that you only have to add/subtract the numerator which makes it much easier.


What is the meaning of addition and subtraction of similar fraction?

Similar fractions are fractions with the same denominator. In order to add or subtract fractions they need to be similar.


Why do you need a common denominator with fractions?

You can add or subtract fractions only if they are "like" fractions, that is, only if they have the same denominator - unless you know your fractions really well.


To add and subtract fractions less than 1 you add or subtract only the what?

Numerators


Why do you needto find the LCM?

Finding the LCM will help you when you need to add and subtract fractions.


When do you need a common denominator?

The denominators must be the same before you can add or subtract fractions.


Why do you need to get the least common multiple?

So that you will be able to add and subtract fractions accurately.


When and why should you find the LCM?

When you want to add or subtract fractions and need to find a common denominator.


What job would you have to use LCM and HCF for?

Any job where you need to add or subtract fractions.


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.

People also asked

1/2" + 3/8" =?

View results