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Q: What 2 operations are used with lowest common denominator?

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LCM is used to find the lowest common denominator in fractions HCF is used to reduce fractions to their simplest terms

The Least (or Lowest) Common Multiple (LCM) is the smallest number that is a multiple of both numbers. For example: the LCM of 10 and 4 is 20, because both 10 and 4 go into 20 and 20 is the smallest number both 10 and 4 can go into. To be able to add or subtract fractions they must have the same denominator. If the denominators are different then the fractions must first be converted into equivalent fractions with a common denominator; any common denominator can be used, but by using the Least Common Multiple of the denominators as the new denominator it keeps the numbers smaller; this smallest denominator is known as the Least Common Denominator Thus the Least Common Denominator is the Least Common Multiple of the denominators of two (or more) fractions (used when adding or subtracting fractions with different denominators). As the Least Common Multiple is used most often with adding or subtracting fractions, it is often referred to as the Least Common Denominator (because the numbers being considered are usually denominators of fractions).

If the denominators are the same number, add the numerators together and put that total over the original denominator. Reduce if possible. 1/4 + 2/4 = 3/4 3/8 + 3/8 = 6/8 = 3/4 If the denominators are different numbers, it is necessary to find a common denominator. Find the Lowest Common Multiple (LCM) of the denominators (also known as the Lowest Common Denominator, or LCD) and convert the fractions to equivalent fractions with the same denominator. Now that they have the same denominator, proceed as above. 1/4 + 1/6 = 3/12 + 2/12 = 5/12 If you are struggling to find the LCM just multiply the denominators together - it just means that you will likely be working with larger numbers than if you had used the LCM.

It is: 6 because 24/30 = 4/5 in its lowest terms

One way to compare two fractions is to convert both to a common denominator. Then the only difference is in the numerator. Comparison of the numerator is then sufficient to compare the fractions. A percentage is equivalent to converting the fractions to a denominator of 100.

Related questions

Finding the lowest common denominator

When adding or subtracting fractions with different denominators then the least common multiple amongst them is needed to find the lowest common denominator.

The lowest common multiple is 5832 which would be used for the LCD. 729 is 36 and 8 is 23. Since they have no common factors, you find the LCD by multiplying the two numbers.

There is an infinite number of common multiples for 10 and 9. A common multiple of any two or more numbers is any number into which each of two or more numbers can be divided evenly (zero remainder). However, the least or lowest common multiple of 10 and 9 is 90.

Many places, but a common one is in adding fractions where we find a common denominator.

LCM is used to find the lowest common denominator in fractions HCF is used to reduce fractions to their simplest terms

When those terms are used in math. LCD is Lowest Common Denominator and LCM is Lowest Common Multiple. In computer display technology, they stand for Liquid Crystal Display and Liquid Crystal Monitor, respectively.

It is usually called the least common multiple. But it can also be called the least/lowest common denominator when it is used for addition or subtraction of rational fractions.

Least common denominator. Used in fractions. For example : 1/2 and 3/4 The fraction that has the lowest denominator, while still having an equivalent fraction is the LCD. In this case it would be 2/4 and 3/4. Because 1/2 = 2/4, and the lowest common denominator between the two fractions is 4. Hope this helps ! :D

LCD stands for Lowest or Least Common Denominator. It's just like the LCM (Least Common Multiple) and is used to make fractions suitable for addition and subtraction.

The Least (or Lowest) Common Multiple (LCM) is the smallest number that is a multiple of both numbers. For example: the LCM of 10 and 4 is 20, because both 10 and 4 go into 20 and 20 is the smallest number both 10 and 4 can go into. To be able to add or subtract fractions they must have the same denominator. If the denominators are different then the fractions must first be converted into equivalent fractions with a common denominator; any common denominator can be used, but by using the Least Common Multiple of the denominators as the new denominator it keeps the numbers smaller; this smallest denominator is known as the Least Common Denominator Thus the Least Common Denominator is the Least Common Multiple of the denominators of two (or more) fractions (used when adding or subtracting fractions with different denominators). As the Least Common Multiple is used most often with adding or subtracting fractions, it is often referred to as the Least Common Denominator (because the numbers being considered are usually denominators of fractions).

Yes.

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