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Sum of the fractions = sum of numerators divided by their common denominator.

Adding Fractions rule implies to addition of fractions having same denominator and as well as adding fractions with different denominators.

So rule for adding fractions having the same denominator is add the numerators and simplify

For example : 3/5 + 2/5 + 9/5

= (3 + 2 + 9)/5 [add the numerators]

= 14/5

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โˆ™ 2010-08-09 07:32:36
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Q: What is the rule in adding fractions having the same denominator?
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Related questions

What is the rule for adding fractions?

They have to have a common denominator

What is the rule for subtracting fractions?

First, change it so that the two fractions have the same denominator (by changing the fractions into equivalent fractions). Once the two fractions have the same denominator, it is simply a case of subtracting the numerators, leaving the denominator the same. Finally, reduce the fraction to its lowest terms (if possible).

What is a general rule for multiplying fractions and whole numbers?

A general rule for multiplying fractions: You shall not multiply the denominator by the whole number,only the numerator.Another rule is you shall make the whole number as a fraction by putting the whole number as the numerator and 1 as the denominator before multiplying it.

What is the rule for changing mixed fractions to improper?

Multiply the denominator by the whole number, add the numerator, and put that total over the denominator.

Do the adding fractions rule apply to subracting?

Yes inasmuch that the denominators of the fractions must be common to each other.

What is the rule of adding and subtracting different denominator?

Find the lowest common denominator by finding the lowest common multiple of the denominators

What are three rules you can use to compare fractions?

Rule #1 When two fractions have the same denominator, the bigger fraction is the one with the bigger numerator. Rule # 2 When comparing fractions that have the same numerator, the bigger fraction is the one with the smaller denominator. Rule # 3 You can convert the fractions and then just put the greater than, less than or equal to sign to see what the comparison is between the fractions.

What is a rule for ordering fractions with the same denominator?

If they have the same denominator, then (assuming the denominator is positive), igbore the denominator for determining the order. That is, order the numbers by their numerators. In the unlikely event that the denominator is negative, the above method will give the reverse order.

What is the state rule for dividing fractions?

Take the 2nd fraction, switch the denominator with the numerator, multiply across, simplify.

What is the rule for adding fractions with unlike denominators?

You convert them, using equivalent fractions, so that they have the same denominator - a common multiple of the deniminators. Then the denominator of the sum is the common multiple while the numerator is the sum of numerators of the converted fractions. Finally, you need to check if the answer can be simplified. Students are often instructed that they must use the least common multiple (LCM). This is not necessary: any common multiple will do, though the LCM will require smaller numbers and so may be easier.

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 the rule in adding rational numbers?

what is the rule in adding rational numbers

How do you turn fraction into whole number?

As a general rule, proper fractions cannot turn into whole numbers and only in limited cases are improper fractions able to. The only way a fraction becomes a whole number is if the numerator is a multiple of the denominator.

What is the rule for significant figures when adding or subtracting decimals?

When adding and/or subtracting, your answer can only show as many decimal places as the measurement having the fewest number in the decimal places.

What is a rule for ratio With a denominator of 1?

The rule depends on what you wish to do with the ratio.

What happens if the denominator is the same when multiplying fractions for example 3 over 8 times 1 over 8?

Do you know how to multiply fractions if the denominators are different ?Multiply the numerators to get the numerator and multiply denominatorsto get the denominator ? Is that right ?Well, that rule doesn't actually say anything about whether the denominatorsare the same or different, does it.That's because it doesn't matter. The rule is good either way.

What is the rule when subtracting fractions with uncommon denominators?

You first find a common denominator (eg for 2/3 and 4/7, it would be changed to 14/21 and 13/21) and then subtract them for each other. When doing this, you always multiply the numerator and denominator (top and bottom numbers) by the same amount

The birthday rule applies to determining what?


In mathematics is there something that uses recipes for fractions?

use your pattern to write a rule for equivalent fractions

What is the rule for the denominator of recuring decimals?

The denominator must have a prime factor other than 2 and 5.

What are is the rule for subtracting fractions with negative signs?

the same as adding whole numbers. two negatives = negative. two positives = positive, and a negative and positive depends on the absolute value of the greater number.

What is the rule for multiplying fractions with like denamonators?

Multiply all numerators to get numerator of the product. Multiply all denominators to get denominator of the product. This is true whether the factors have like or unlike denominators.

What is the rule for Equivalent Fractions?

3/4 750

What are the rule of dissimilar fraction?

Dissimilar fractions are fractions whose denominators are different. Any rules will depend on what you wish to do with them.

What is a rule on how to find a ratio with a denominator if 1 without using a diagram?

Divide the numerator of the original fraction y its denominator.