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those two operations are addition and subtraction.

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Q: When working with fractions and mixed numbers what 2 operations require that you find common denominators before beginning to work?
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Related questions

How do you know when two fractions are equal?

If the denominators (bottom numbers) are not equal, making equivalent fractions of them so that the denominators are equal. With the denominators equal if the numerators (top numbers) are equal, then the fractions are equal.


What are unlike mixed numbers?

the fractions have different denominators


How do you subtract fractions with mixed numbers and like denominators?

Convert them to improper fractions and proceed.


Which denominators will produce recurring fractions?

The numbers that produce recurring numbers are: 3,6,7,9,11,12,13.. Hope this has helped you...


Discuss the possible advantages and disadvantages of using least common denominators when adding and subtracting fractions?

By using least common denominators when adding and subtracting fraction you get small numbers which are easy to perform operations on. On the other hand if you deal with common denominators which are excessively large, then you will find that operations are harder to perform. The one disadvantage of using LCD is that they can occasionally be difficult to find.


What are fractions with unlike denominators mean?

The denominator is the bottom number in a fraction. Fractions like 1/3 and 1/4 have different numbers on the bottom. Those are unlike denominators.


How do you multiplify fractions?

multiply the numerators (top numbers) together then multiply the denominators (lower numbers) together


Adding mixed numbers with unlike denominators?

First convert the mixed numbers into "top heavy (or "improper) fractions". Now multiply each of the improper fractions by each other - this makes the denominators the same. Now you can add both the fractions together (and cancel down if necessary).


Do you Add both the numerators and the denominators when adding fractions and mixed numbers?

False [ I THINK ]


How to add and subtract mixed numbers?

Convert them to improper fractions with common denominators and proceed.


How would you add or subtract fractions with like denominators?

The same way you would add or subtract whole numbers, leaving the denominators alone.


How does the least common multiple of two numbers help you add fractions?

When adding unlike fractions, find the LCM of the denominators and convert them to it.