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The least common factor of any set of numbers is 1, so that doesn't help at all. Finding the GCF of the numerator and denominator and dividing them by it will help to simplify a fraction. Finding the least common multiple of the denominators (called the least common denominator) will help when you add and subtract fractions. None of those are needed to multiply fractions.

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Q: How can knowing the greatest common factor and lowest common factor help when you add subtract and multiply fractions?

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Knowing the LCM of the denominators will help you to find a least common denominator of unlike fractions, which will allow you to add and subtract them successfully. Knowing the GCF and LCM will not help you in multiplying them, but knowing the GCF of the numerator and denominator of a fraction will help you reduce it if necessary.

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.

Knowing the least common multiple of the denominators will help you find a common denominator when adding and subtracting unlike fractions. Knowing the greatest common factor of the numerator and the denominator will help you reduce the fraction if possible.

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.

Knowing the LCM of the denominators of unlike fractions will help you find the least common denominator, a necessary step in adding and subtracting them. Knowing the GCF of a numerator and denominator will tell you if the fraction can be reduced.

Well after you finish your education there are some jobs you would like to get which would require maths skills^^

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.

Ordinarily, one finds the least common denominator (LCD) of a set of common fractions in order to add or subtract the set of fractions. The LCD is the least common multiple (LCM) of the denominators of the set of fractions. Without knowing whatis to be multiplied by the LCD, and why, this question is ambiguous.

It will help you in life a ton! knowing how to add,multiply,subtract,and a lot of other math stuff will help you get good grads, get a good job, and help you know if your getting ripped off at a yard sale.

Yes, bankers use fractions because fractions are the same as percentage. and they need percentage for exact change and for knowing how much money is in the safe.

Because you can't add or subtract fractions unless they have the same denominator, so when you run up against two fractions with different denominators, you have to find a single denominator that works for both of them. There are an infinite number of common denominators that you could use, but the easiest one to handle without making mistakes is going to be the smallest one, so it's worth knowing how to find it.

When reducing fractions to their lowest terms knowing their gcf is useful

Knowing factors will help you find a GCF. To simplify a fraction, divide the numerator and the denominator by their GCF.

Impossible to answer without knowing what you mean by "greatest" and "least".

Knowing which element it is and its formal charge, subtract the charge from its atomic number.

Not necessarily, for example: If you subtract 3 from 4, then you get +1. But if you subtract 4 from 3, you get -1. The answer will always be an integer, but you cannot make a general statement about the sign, without knowing more information.

the greatest tragedy in life...in philosophy is not death but, to live without knowing the purpose....

knowing brendan buckley

You need to find a common denominator for the two fractions, then you can subtract them. Most will find the lowest common denominator (LCD) which is the same as the lowest common multiple of the two denominators, but any common denominator will work. You can get a common denominator, by multiplying the two numbers together, for example, but it might not be the lowest.Here's an example: 1/2 - 1/6 --> a common denominator is 2 x 6 = 12, but knowing how to find the lowest common denominator, you find LCD = 6.Either one will work though. Take 12: we need to convert each fraction to an equivalent fraction that has 12 in the denominator. So for 1/2, we need to multiply 2 by a number to get 12 [12/2 = 6], so we multiply top and bottom by 6, and get 6/12.For 1/6, multiply 6 by 2 is 12, and the top: 1 times 2 = 2 --> 2/12.Now we have 6/12 - 2/12. The denominators are the same, so subtract the numerators: 6 - 2 = 4, so we have 4/12.Now simplify: Factor out and see what common factors between 4 and 12 can be canceled. So 12 = 3 x 4, and we have (1 x 4) / (3 x 4) = 1/3, so 1/2 - 1/6 = 1/3.

The phrasing of the question implies that you already have one or more examples of proper fractions. But we have no way of knowing what they are. So we cannot tell whether what we say in the answer is another example or one that you already have.

Subtract the atomic number from the mass number.

We won't be able to answer that without knowing the conents.

take the outside diameter and subtract the thickness twice.

If you divide the numerator and the denominator of a large fraction by their GCF, the result will be the fraction in its simplest form.

Knowing the highest common factors of numbers helps to reduce fractions to their lowest terms Factoring helps to find the lowest common multiple of numbers which is useful when adding or subtracting fractions with different denominators.