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When adding fractions, you want to make sure that the denominators are the same. It's the same process as the LCM.

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โˆ™ 2012-10-20 23:17:23
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Q: Do you find the GCF or LCM when adding fractions?
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When is it useful to find the LCM or gcf?

It is useful to find the LCM when you want to add and subtract fractions. It is useful to find the GCF when you want to reduce fractions.


When would you apply gcf instead of lcm?

GCF is used for factoring terms, possibly in solving equations. LCM is used to find a common denominator when adding or subtracting fractions.


Why is greatest common factor in math helpful?

Finding the GCF helps to reduce fractions to their simplest form. Knowing the GCF can help to find the LCM, which assists in adding and subtracting fractions.


Why would you need to find thr GCF and LCM of a set of numbers?

Finding the LCM helps in adding and subtracting numbers. Finding the GCF helps in reducing fractions to their simplest form.


When can you use common multiples and factors?

Use the LCM when you are adding and subtracting unlike fractions. Use the GCF when you are simplifying fractions.


When would you need to find the LCM?

When you are adding and subtracting fractions.


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.


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

When adding and subtracting unlike fractions, it is necessary to find a least common denominator. It's the same process as finding an LCM. You can simplify a fraction by finding the GCF of the numerator and denominator and dividing them both by it.


Why do you find the LCM of numbers?

Finding the LCM helps in the process of adding and subtracting unlike fractions.


When is it useful to find the LCM and GCF of two numbers to solve a problem?

The GCF is useful when you are trying to reduce fractions. The LCM is useful when you are trying to add and subtract unlike fractions.


When is it useful to find the LCM or GCF of two numbers to solve a problem?

The GCF is useful when you are trying to reduce fractions. The LCM is useful when you are trying to add and subtract unlike fractions.


How can greatest common factors and least common multiples help you work with fractions?

The GCF is helpful in reducing fractions. The LCM is helpful in adding and subtracting unlike fractions.


How can greatest common factor and least common multiples help you work with fractions?

The GCF helps in simplifying fractions and the LCM helps in adding and subtracting them.


How does the LCM and the GCF help in life?

Finding the LCM will help you add and subtract fractions. Finding the GCF will help you reduce fractions.


What is the use of LCM?

When adding or subtracting unlike fractions, the LCM process is used to find the least common denominator.


How do GCF and LCM involve with the real world?

Use the GCF to reduce fractions. Use the LCM to add and subtract unlike fractions. Carpenters work with fractions a lot.


What types of problems can be solved using the GCF and LCM?

The GCF can be used to reduce fractions. The LCM can be used to add and subtract unlike fractions.


What problems can be solved using gcf and LCM?

Use the GCF to reduce equivalent fractions. Use the LCM to add and subtract unlike fractions.


Why is it helpful to find GCF and LCM?

Finding the GCF helps to reduce fractions to their lowest terms. Finding the LCM helps to add and subtract fractions with different denominators by finding their lowest common denominator.


What are the daily applications of LCM?

Adding fractions.


When is it useful to find the LCM or GCF of two or more numbers to solve a problem?

When adding or subtracting fractions with different denominators and when reducing fractions to their lowest termsWhen adding or subtracting fractions with different denominators their lowest common multiple is needed and when reducing fractions to their lowest terms their greatest common factor is needed.


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

When adding and subtracting unlike fractions, it is necessary to find the LCM of the denominators, called the least common denominator. Once you have found the LCD, you can convert the fractions to equivalent fractions with a common denominator and proceed with the adding and/or subtracting. Finding an LCM will have no effect on multiplying fractions.


Why do you need HCF and LCM?

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


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.


What is the use of HCF and LCM?

The HCF helps when reducing fractions. The LCM helps when adding or subtracting fractions.