Today in class we went over how to simplify fractions and greatest common factors.
You simplify a fraction by dividing the numerator and the denominator by the same number. For an example if your fraction is 5/25 . You would divide the numerator (5) by 5, because it is the largest number you can divide it by without getting a fraction 5 divided by 5 =1. Then you divide the denominator by 5 because it is the number you divided the numerator by. So 25 divided by 5=5. So the simplified fraction is 1/5. That is how you simplify a fraction. If the numerator is larger than the denominator. Then after you simplify it you change it to a mixed number. For an example the fraction could be 15/5 after you simplify it it would be 5/3. After you simplify it you can it to the mixed number which would be 1 and 2/3
You get the common factor by listing the prime factors of each number. Then you multiply the greatest common factor by each other. If there are no common prime factors, the greatest common factor is 1. For an example 18's common factors are 2,3,3. 24's common factors are 2,2,2,3. So now you take the great common number which in the case is 3. Now do 3*3 which is 9. So the greatest common factor is 9.
Notes by,
Kasey D.
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