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How do you use the LCM to write two or more fractions with with a common denominator in a 6 grade way?
Wiki User
∙ 11y ago
When we're working with fractions, we call it the least common denominator, but it's the same process. Example: 1/30 and 1/42
Factor them.
2 x 3 x 5 = 30
2 x 3 x 7 = 42
Combine the factors, eliminating duplicates.
2 x 3 x 5 x 7 = 210, the LCD
1/30 = 7/210
1/42 = 5/210
Wiki User
∙ 11y ago
Wiki User
∙ 9y agoLet's take an example. Consider the fractions 2/8 and 5/6. The LCM of 8 and 6 is 24. Hence the fractions become 6/24 and 20/24. Now the denominators are equal and hence the numerators may be added to get 26/24 as the answer. LCM is also used in subtraction of fractions.
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How do you you use least common multiple to write two or more fractions with a common denominator?
Find the LCM of the denominators. Convert the fractions to equivalent fractions with a common denominator. Example: 1/30 and 1/42 Factor them. 2 x 3 x 5 = 30 2 x 3 x 7 = 42 Select the highest amount of each factor. 2 x 3 x 5 x 7 = 210, the LCD 1/30 = 7/210 1/42 = 5/210
What is common factors to write two fractions equivalent to .571428571?
4/7, 8/14
How can you use prime factorization to write a fraction in simplest form?
The idea is to divide numerator and denominator of a fraction by any common factors. Prime factorization is simply used to find all possible factors.
When you write a fraction in simplest form the numerator and denominator always or never have 1 as their only common factor?
Always
Why is it important to find the least common multiple?
If you are adding fractions, finding the least common multiple makes the arithmetic easier. For instance if you add 3/4, 5/6 and 1/12 the LCM is 12. In the worst case, you might multiply 4x6x12 to get 288, and have to change each fraction to 288ths!
Find a common denominator for the pair of fractions. Then, write equivalent fractions with the common denominator?
Find google
How do you minnous fractions?
Subtracting fractions is similar to adding fractions. If the fractions have the same denominator, you subtract the numerators. If the fractions have different denominators, you have to convert to a common denominator first.Subtracting fractions is similar to adding fractions. If the fractions have the same denominator, you subtract the numerators. If the fractions have different denominators, you have to convert to a common denominator first.Subtracting fractions is similar to adding fractions. If the fractions have the same denominator, you subtract the numerators. If the fractions have different denominators, you have to convert to a common denominator first.Subtracting fractions is similar to adding fractions. If the fractions have the same denominator, you subtract the numerators. If the fractions have different denominators, you have to convert to a common denominator first.
How do you write the Simplest form of fractions?
Factor the numerator and denominator, and then cancel any common factors.
Why is it helpful to write a number as a product of prime?
When adding or subtracting fractions with different denominators finding the prime product of each denominator helps in finding the lowest common denominator of the given fractions by their lowest common multiple.
Why do you need like denominators to add and subtract fractions?
Finding a common denominator makes it possible to add two fractions because it allows us to write each fraction as a multiple of a common (usually smaller) fraction. Subtracting fractions works the same way; find a common denominator so that the fractions involved are in the same terms.
Why is it helpful to write a number as a product of primes?
Because it helps in reducing fractions to their simplest terms and finding the lowest common denominator when adding or subtracting fractions
Adding dissimilar fractions and whole numbers?
1. change the dissimilar fractions to similar fractions by getting the L.C.D or the least common denominator. 2. add the whole numbers and write down the given denominator. 3. reduce the answer to lowest term if possible.
How do you add fractions with different denomanaters?
You convert to a common denominator first. Then you add or subtract the numerator and write it in simplest form
How do you write equivalent fractions with the lowest common denominator?
Example: 2/3 and 3/4 The LCD of 3 and 4 is 12. Multiply the numerator and the denominator of 2/3 by 4 to make 8/12 Multiply the numerator and the denominator of 3/4 by 3 to make 9/12
How do you Add and Subtratc fractions mixed with the same denominators and Different denominators?
Different denominators: First, you find a common denominator (it can be the least common denominator, or any common denominator), and convert all fractions involved to equivalent fractions, using the common denominator. For example, 1/4 + 2/3. 12 is a common denominator; you can write this as 3/12 + 8/12.Same denominator: Just add (or subtract) the numerators, and keep the denominator. The above addition would become 11/12. Finally, you may want to check whether you can simplify the answer. Depending on how you (or the teacher) prefers the answer, you may also want to convert to a mixed fraction. In the above example, no such simplification is possible.
Why is it important to learn about equivalent fractions?
Answer: When adding or subtracting fractions with different denominators it is important to change the denominators into the lowest common denominator by using equivalent fractions. Answer: Equivalent fractions are used to: * Simplify fractions. It is sort of inelegant to write the final solution of a problem as 123/246, when you can just as well write it as 1/2. * Add fractions. If two fractions have different denominators, you need to convert them to equivalent fractions that have the same denominator. Only then can you add. * Subtract fractions (same as addition). * Compare fractions, to check which one is larger (same as addition).
How do you write mixed numbers into fractions?
You multiply the denominator by the whole number the add the numerator and you keep the denominator the same.
