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Q: Is the sum of two proper fractions is always a proper fraction?

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No - one half plus one half equals one.

I have no idea what the "sum" of a fraction means.

First add all the fractions together. Then, divide this sum by the total number of fractions that were in the set. This quotient is your average fraction.

It is a mixed fraction.

None of the items in the list.

Round the mixed fraction to half of whole.

It is a fraction - which may be mixed or proper.

The two fractions are -181/2 and 191/2.

Greek fractions were very complicated. They did the number system and made a complex sum ending with the fraction.

it depends on what numbers they are

mix number

An improper fraction is when the numerator is a greater sum then the denominator. Example- 10/5. To change that into a proper fraction you divide the numerator by the denominator. Example - 2 1/5

Multiply the whole number by the denominator. Add the product to the numerator of the proper fraction. The sum is the numerator of the improper fraction. The denominator will stay the same.

That their sum is always equal to the denominator.

The sum of a whole number and a fraction is called a mixed number.

An easy method for finding a fraction between two fractions would be to take the average of two fractions. You find the average by adding the two fractions together and then dividing the final sum by 2.

15 and 310 are both integers, not fractions. Their sum is 325.

this is a simple question. There are, however, a lot of answers. They all depend on your definition of "proper fraction". The simplest answer is 1/2 and 49999999..../100000000..... you need to specify "proper fraction" definitions if you wish to get an answer out of this one.

Make sure the denominators of all the fractions are common.Add all numerators.Reduce the final fraction to its simplest form.Convert improper fraction to mixed number if needed.

First you add the fractions, then you see if you can simplify the result. You simplify it just as you would simplify any other fraction.

There are infinitely many ways.

It depends on your level of numerical skill. You can convert the decimal to an approximate fraction and estimate the sum of the two fractions, or you can convert the fraction to an approximate decimal and estimate the sum of the two decimals or, if you are more able you just estimate their sum directly.

Before fractions can be subtracted or added, they must have the same denominators. Therefore, each of the denominator and numerator of a pair of dissimilar fractions should be multiplied by a number chosen so that the resulting fractions will have the same denominators. This is most readily accomplished by multiplying each fraction by the denominator of the other. Once the fractions have a common denominator, their numerators can be subtracted or added to obtain the proper value of the numerator of the sum or difference, which will have the common denominator thus determined. It may, of course, be possible to simplify the resulting fraction.

Infinitely many ways, since if you have found one way then take one of the fractions and replace it by an equivalent fraction. Repeat for ever.

If the fractions do not all have the same denominator, find a common multiple of the denominators (ideally the lowest common multiple) and convert the fractions to equivalent fractions with this denominator. Now with all the fractions with the same denominator, add together the numerators. Finally, reduce the fraction to simplest terms, converting any improper fraction to a mixed number.