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The answer depends on what they are meant to be alike and different from!

Q: How are unit fractions alike and different?

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Unit rates are a special type of rates: those where the numerator or, more usually the denominator, of the rate is 1.

i think they are bothe fractions

They have the same numerator (1) but different denominators. Since the numerator is 1 in each fraction, it cannot be simplified therefore each unit fraction is in its simplest form. Then, because the denominators of any two of them are different the fractions must be different.

There are infinitely many different ways to make groups of fractions that sum to 1.

Convert unlike fractions to equivalent fractions with common denominators by finding the LCM of the denominators.

Related questions

Unit fractions all have the same numerators but the denominators can be different.

Fractions are alike if they have the same denominators; otherwise they are different.

All of them have a numerator of 1.

They are not alike, they are different, but they can be identical in value. Example :- 3/4 and 0.75 are different ways of expressing the same quantity and they are not alike at all.

Unit rates are a special type of rates: those where the numerator or, more usually the denominator, of the rate is 1.

Well as a matter of fact Egyptian fractions can only be unit fractions with different denomitnators. They will never do 1/2+1/2=1 instead they would us the mehod /i explained.

Fractions and decimals are alike because you can make a fraction into a decimal (here's an exanple; 1/2 can be made into 0.5) and vice versa. The only difference is the different forms they are written in; a fraction is written in fraction form and a decimal is written in decimal form.

i think they are bothe fractions

They have the same numerator (1) but different denominators. Since the numerator is 1 in each fraction, it cannot be simplified therefore each unit fraction is in its simplest form. Then, because the denominators of any two of them are different the fractions must be different.

they sometimes have the same answer and sometimes they dont.

There are infinitely many different ways to make groups of fractions that sum to 1.

Convert unlike fractions to equivalent fractions with common denominators by finding the LCM of the denominators.