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What part of the fraction does not change when you add or subtract?
Wiki User
∙ 12y ago
If you find the common denominator for the fractions, then the bottom will stay the same :) BUT sometimes it is diffacult to find the common denominator so you may need help
Wiki User
∙ 12y ago
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How do you subtract mixed numbers that do not have the same denominator?
Find a common denominator of the fraction parts (the least common denominator is the popular choice). If the fraction part of the subtrahend is bigger than that of the minuend, you need to subtract 1 from the integer (whole number) part of the minuend and add it (as a fraction) to the fraction part. For example, 5 3/7 becomes 4 10/7. Then you can subtract the fraction parts by subtracting the numerators, and subtract the integer parts, provided the integer part of the minuend is greater than or equal to that in the subtrahend. If not, reverse the roles of the minuend and subtrahend and use the above method to subtract, then make the sign of the difference negative.
How do you add and subtract fractions in math?
You need common denominators. Then add or subtract the numerators. If the answer is an improper fraction it is common practice to reduce it to a mixed number.
How do you record score in fraction damath?
just add , subtract , multiply , and , divide
How do you add a mixed fraction by a mixed fraction?
You can either add the fractional parts and, if required, convert the answer to a mixed fraction and then add the integer part to the integer parts of the two original numbers; or change both numbers to top-heavy (or improper) fractions, add them and then convert the answer to a mixed fraction.
How can you add and subtract mixed numbers?
Make it into an both numbers an improper fraction and then do the opperation.
How do you add and subtract similar fraction?
Just simply add/subtract the numerators then copy the denominator.
How do you subtract mixed numbers that do not have the same denominator?
Find a common denominator of the fraction parts (the least common denominator is the popular choice). If the fraction part of the subtrahend is bigger than that of the minuend, you need to subtract 1 from the integer (whole number) part of the minuend and add it (as a fraction) to the fraction part. For example, 5 3/7 becomes 4 10/7. Then you can subtract the fraction parts by subtracting the numerators, and subtract the integer parts, provided the integer part of the minuend is greater than or equal to that in the subtrahend. If not, reverse the roles of the minuend and subtrahend and use the above method to subtract, then make the sign of the difference negative.
Why do you need to find the LCM of a fraction?
or else you cannot add or subtract them
How do you add and subtract fractions in math?
You need common denominators. Then add or subtract the numerators. If the answer is an improper fraction it is common practice to reduce it to a mixed number.
How do you record score in fraction damath?
just add , subtract , multiply , and , divide
How do you subtract a negative fraction from another negative fraction?
i think you just add it and put the negative sign in front of it
How do you add a mixed fraction by a mixed fraction?
You can either add the fractional parts and, if required, convert the answer to a mixed fraction and then add the integer part to the integer parts of the two original numbers; or change both numbers to top-heavy (or improper) fractions, add them and then convert the answer to a mixed fraction.
How do your borrow from a whole number when subtracting fractions?
A mixed number has a whole number and a fraction. A fraction is a number that is less than whole and that has a denominator underneath a numerator. To add or subtract mixed numbers, add or subtract the fractions, then add or subtract the whole numbers. If the fraction portion of a mixed number, such as 2 5/6, is more than the fraction portion of the mixed number you're trying to subtract from, such as 3 1/6, you must borrow from the whole number of the mixed number you're trying to subtract from to make its fraction bigger... Please comment on my answers I do not have a Facebook account...
How do you subtract a whole fraction with a normal fractrion?
I am not quite sure what you mean with "whole fraction". If you have whole numbers, or mixed numbers, you subtract the whole part and the fractional part separately. For example: 3 3/7 minus 1 1/7 = ??? For the whole number, subtract 3 - 1 = 2. For the fractional part, subtract 3/7 - 1/7 = 2/7. If the fractional part in the first number is less than the one in the second part, subtract one to the whole part, and add the equivalent fraction (equivalent to 1) to the fractional part. Here is another example: 10 1/5 minus 2 3/5 = ??? From the first fraction, subtract one to the whole part, and add 5/5 (which is equal to one) to the fractional part, so you get: 9 6/5 minus 2 3/5 = ??? Now you can continue with the subtraction as mentioned above. The result in this example is 7 3/5. In all the examples above, I chose a common denominator; if the demoninators are not the same, converting to a common denominator is just the same as when you want to add fractions, for example.
How do you add and subtract mixed numbers with unlike denominators?
just change the fration with the smallest denominator and add or subtract the way you always do.
Can you give me some example of verb phrases in math?
add , subtract, multiply, fraction,
How can you add and subtract mixed numbers?
Make it into an both numbers an improper fraction and then do the opperation.
