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No because in order to subtract or add fractions the denominator of the fractions must be the same and if they are not then the lowest common denominator of the fractions must be found. Having subtracted or added the fractions then it may be possible to simplify the result.
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When would you need to find the LCM?
When you are adding and subtracting fractions.
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.
How is the least common multiple used when adding and subtracting fractions?
When adding and subtracting unlike fractions, find the LCM of the denominators and convert them to it. In this case, it's called the least common denominator, but it's the same process.
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.
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.
When adding or subtracting fractions you need to?
Find a common denamonator.
When would you need to find the LCM?
When you are adding and subtracting fractions.
What is the importance of reducing fractions to lowest term?
In order to find the LCD when adding or subtracting fractions
When trying to find like fractions do you first simplify all fractions and then find the like denominators?
yes
What is a subtracting mixed number?
Subtracting a mixed number is just subtracting fractions but with a whole number by a fraction. To subtract tun the mixed numbers into improper fractions and find the common denominator. Then you subtract the numerators.
How do you find a multiple when subtracting fractions?
Same as adding, multiplying, and dividing.
Do you have to find a common denomiter in dividing fractions?
No, you only need a common denominator when adding or subtracting fractions.
When will you need to find the multiples and factors?
When adding or subtracting fractions with different denominators and when reducing fractions to their lowest terms
Why are equivalent fractions important when adding and subtracting fractions?
Because to add or subtract two fractions you first have to find equivalent fractions for both which have the same denominator.
What kind of problems you need to find the GCF?
When you are trying to simplify fractions.
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.
Adding and subtracting unlike fractions steps?
first u find a common denominator
