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You just add the top numbers together if the bottoms are the same. Example: 1/2 + 1/2 = 2/2 = 1

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โˆ™ 2012-04-16 08:01:59
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Q: How do you do adding and subtracting fractions with like denominators?
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What is the definition of adding and subtracting fractions with unlike denominators?

What is the definition of Adding and Subtracting Like Fractions


How do you minnous fractions?

To subtract fractions with like denominators, subtract the numerators , and write the difference over the denominator. Example : Find 45โˆ’25 . Since the denominators are the same, subtract the numerators.


What do you notice about the denominator when subtracting like fractions?

By the definition of like fractions, the denominators are the same.


How is adding like fractions and adding unlike fractions the same?

If the denominators are not the same, then you have to use equivalent fractions which do have a common denominator . To do this, you need to find the least common multiple (LCM) of the two denominators. To add fractions with unlike denominators, rename the fractions with a common denominator. Then add and simplify.


Before adding or subtracting two fractions they are converted into like fractions Explain with examples why this is necessary?

Before adding or subtracting two fractions they are converted into like fractions. Explain with examples why this is necessary.


When adding fractions with like denominators how do you convert?

When adding fractions with like denominators, add the numerators together and put the result over the denominator. Simplify if possible.


How is multiplying fractions by a whole number is different from adding adding and subtracting fractions with like denominators?

Adding and subtracting fractions can ONLY be done if the denominators are the same; then the calculation is done by adding or subtracting the numerators. Multiplying (and dividing) fractions does not require the denominators to be the same. To divide by a fraction the divisor is inverted (the original numerator becomes the new denominator and the original denominator becomes the new numerator) and then the fractions are multiplied. Multiplying fractions is achieved by multiplying the numerators together AND multiplying the denominators together. A whole number is the same as a fraction with the whole number as the numerator and a denominator of 1, so when multiplying by a whole number the denominator is multiplied by 1 (leaving it the same) and the is multiplication is effectively just multiplying the numerator by the whole number.


Are the steps for like and unlike denominators the same or different?

It depends what you are doing with the fractions. If you are multiplying or dividing fraction, the denominators do not need to be the same and the calculation can be carried out immediately. If you are adding or subtracting fractions, the denominators must be the same; if you have different denominators, the fractions must first be changed into equivalent fractions with the same denominator. When the denominators are the same (or have been made the same as equivalent fractions from being different) the calculation can be carried out.


How is subtracting decimals is like subtracting fractions?

because you subtract the 2 numerators and then 2 denominators right across just like that :)


How is subtracting fractions like adding fractions?

You need a common denominator for both.


Before adding or subtracting Why are fractions turned into like fractions?

They have to have the same denominator.


Can you explain adding and subtracting fractions with like denominators?

When you add or subtract fractions with like denominators, you just add or subtract the numerators and put them over the same denominator. For example, 3/5 - 2/5 = (3 - 2)/5 = 1/5


What way is subracting fractions with unlike denominators like adding fractions with unlike denominators?

If the denominators are not the same, then you have to use equivalent fractions which do have a common denominator . To do this, you need to find the least common multiple (LCM) of the two denominators.


Adding unlike fractions?

If the denominators are not the same, then you have to use equivalent fractions which do have a common denominator . To do this, you need to find the least common multiple (LCM) of the two denominators. To add fractions with unlike denominators, rename the fractions with a common denominator. Then add and simplify.


When subtracting like fractions what happens to the numerator and the denominator?

The fractions are re-scaled so that the denominators are the same and then the numerators are subtracted as required by the signs.


What is a Life example of Adding and subtracting like fractions?

Buying pizza and eating it.


What is a common denometer?

When adding or subtracting fractions with different denominators, it is necessary to find a common denominator to solve the equation. A common denominator is like a common multiple, except its function is as the bottom number in a fraction.


What is the meaning of similar fractions?

As a review, similar fractions (also like fractions) are fractions having the same denominators


When fractions have like denominators the larger the what the larger the fraction?

When you have fractions with like denominators, the larger is the one with the larger numerator.


What are the like fraction?

Like fractions are fractions with the same denominators.


How are fact families related to adding and subtracting fractions?

because fact families are like this 2+2=4,4-2=2 and adding


What are characteristics of like fractions?

They have the same denominators


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 can knowing the GCF and LCM help you when you add subtract and multiply fractions?

Knowing the LCM will help when adding or subtracting unlike fractions. By finding the LCM of the denominators, (called the lowest common denominator) you can convert unlike to like fractions and proceed with the adding or subtracting. Knowing the GCF helps reduce a fraction. By finding the GCF of the numerator and the denominator and dividing both of them by it, you can reduce a fraction to its lowest terms (simplest form). If the GCF is 1, the fraction is in its simplest form. You can successfully multiply fractions without knowing the GCF or LCM.


Explain how comparing fractions with like denominators differs from comparing fractions with unlike denominators?

Because when you compare fractions with the same denominators, you do not have to find the least common denominator (LCM or LCD).