Try an exercise....
Put three coins in front of you... let's say that they're worth 1 cent each. Add them all up an you have 3 cents. Now, take one off the table, you know that all coins in total is worth 3 cents, but on the table you only see 2 cents. That means the remaining fraction of cents represented is 2/3 (two cents on the table and one off the table out of three total cents). You also know that the fraction of cents off the table is 1/3 (one cent off the table out of three total cents).
That is the fraction of amounts (as you call it). You know a total but only a fraction of that total is counted for one reason or another (in our example, on the table or off the table).
because you can find out different amounts put together
To find the fraction of an amount or quantity you multiply the amount by the fraction.
When adding or subtracting fractions with different denominators and when reducing fractions to their lowest terms
Only if the denominators are different.
find the lowest common denominator
You find the least comon multiples of the fractions' denominators.
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.
Dissimilar fractions are fractions that have different denominators.
Dissimilar fractions have different denominators.
First find the lowest common denominator and then adjust the fractions accordingly before subtracting the numerators
unlike fractions
There are an infinite number of different fractions between two fractions. If you want the one that's exactly in the middle, half-way between them, there's only one of those. It's called the "average" of the two fractions. Find it like this: -- Add the two fractions together. -- Divide the sum by 2 .