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Why do you have to turn unlike fractions into like fractions to add or subtract?
Wiki User
∙ 12y ago
because its just one of the rules of math :)
Wiki User
∙ 12y ago
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How do you subtract whole numbers with fractions?
Turn the proper fraction into an improper fraction.
How do you subtract fractions from whole numbers?
turn the whole number into an inproper fraction by doing this: multiply it by the denominator of the fraction.that answer is your numerator make the fractions denominator the whole number's denominator.then subtract just the numerators.you should have an improper fraction as your final answer, so turn that into a mixed number.
How do you add and subtract mixed numbers?
SUBTRACTION: You first turn both mixed numbers into improper fractions. If needed, change the denominators into like denominators. Next, subtract the two improper fractions and reduce if necessary. ADDITION: If needed, turn denominators so they are the same number. Next, add and reduce if necessary.
How do you subtract fractions without mixed numbers?
First, turn the fraction into a improper fraction. Then find a common denominator between the two numbers. After this, subtract strait across, but leave the denominator the same.
How do you add or subtract unlike fraction as a mixed numbers in simplest?
I think that the easiest way is probably (1) to convert to improper fractions, (2) then get a common denominator, (3) add or subtract, (4) reduce, and finally (5) convert back to a mixed number. That isn't what you are taught in school. In school you would (1) go straight to the common denominator then (2) see if it is possible to subtract, you don't have as many difficulties to consider in addition, then (3) you may have to 'borrow' 1 from a whole number and turn it into a fraction to make the denominator large enough to subtract, (4) subtract the whole numbers and subtract the fractions, (5) reduce the fraction as needed. In addition you just (1) get a common denominator (2) add whole numbers and fractions (3) reduce the fraction and in some problems change it into a proper fraction and increase the whole number.
How to add mixed fractions?
you can't add nor subtract mixed fractions so you need to turn it into a fraction, if you wanna turn a mixed fraction into a fraction you need to multiply the whole number by the denominator, then add the numerator, then you can multiply normally (make sure you simplify and turn it into a mixed fraction your answer)
How do you subtract whole numbers and fractions?
You have to turn the whole number into a fraction. Ex. 3= 3/1 Then get the fractions to have the same denominator. Ex. 3\1+1\3 becomes 9\3+1\3 Then add the numerators and you have your solution!
How do your turn rations into fractions?
you turn the " : " into "/"
How are equivalent ratios like equivalent fractions?
They are alike because yu can turn a ratio into a fraction or it is already one.
When you add fractions does it turn out to be improper?
yes
How do you turn decimals into ratios?
Convert them to fractions.
How do you turn an improper fraction into a normal fraction?
Improper fractions can't become proper fractions.
