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Because it's easier to get the correct answer this way. Example: 1/3 + 1/4. Without a common denominator, what do you think the answer would be? 1/7? 2/7? 11/34?
The correct answer is 7/12, which can most easily be found by converting 1/3 to 4/12 and 1/4 to 3/12.
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∙ 12y ago
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When adding fractions with unlike denominators it is most helpful if the fractions are renamed using the?
If the denominators are not the same, then you have to use equivalent fractions which do have a common denominator . To do this, you need to find the least common multiple (LCM) of the two denominators. To add fractions with unlike denominators, rename the fractions with a common denominator.
How do you get the common denominator for dividing fractions?
You don't need a common denominator to divide fractions.
Do you need a common denominator for dividing fractions?
No only when adding or subtracting fractions a common denominator is needed
Does division need a common denominator?
No, You only need a common denominator when adding or subtracting fractions.
Do you need a common denominator multiplying fractions?
No.
Adding unlike fractions?
If the denominators are not the same, then you have to use equivalent fractions which do have a common denominator . To do this, you need to find the least common multiple (LCM) of the two denominators. To add fractions with unlike denominators, rename the fractions with a common denominator. Then add and simplify.
Why do you need to use common denominator?
To get the right answer when you add or subtract unlike fractions.
When adding fractions with unlike denominators it is most helpful if the fractions are renamed using the?
If the denominators are not the same, then you have to use equivalent fractions which do have a common denominator . To do this, you need to find the least common multiple (LCM) of the two denominators. To add fractions with unlike denominators, rename the fractions with a common denominator.
How is adding like fractions and adding unlike fractions the same?
If the denominators are not the same, then you have to use equivalent fractions which do have a common denominator . To do this, you need to find the least common multiple (LCM) of the two denominators. To add fractions with unlike denominators, rename the fractions with a common denominator. Then add and simplify.
How do you get the common denominator for dividing fractions?
You don't need a common denominator to divide fractions.
Do you need a common denominator for all fractions before doing the order of operations?
You DO need a common denominator to add, subtract, or compare fractions. You DO NOT need a common denominator to multiply or divide fractions.
What way is subracting fractions with unlike denominators like adding fractions with unlike denominators?
If the denominators are not the same, then you have to use equivalent fractions which do have a common denominator . To do this, you need to find the least common multiple (LCM) of the two denominators.
Do you need a common denominator for dividing fractions?
No only when adding or subtracting fractions a common denominator is needed
Does division need a common denominator?
No, You only need a common denominator when adding or subtracting fractions.
Do you need a common denominator when multyplying fractions?
No.
Do you need a common denominator to multiply fractions?
No.
Do you need a common denominator multiplying fractions?
No.
