Subtracting Fractions: Two Problems: Take-Away and Missing Addend
This clip explains that we subtract fractions in at least two kind of problems: take-away and missing addend. It then provides an example of each, along with instructions on how to solve them. In the take-away problem given, it's necessary to change...
Subtracting Fractions: Comparing Fractions With Different Denominators
This clip explains that comparing two fractions that don't have the same denominator requires multiplying the two denominators in order to find the common denominator of the fractions in question.
Subtracting Fractions: Comparing Fractions With the Same Denominator
This clip explains that if two fractions have the same denominator, the number with the bigger numerator will be to the right of the other on the number line.
Subtracting Fractions: Subtracting Fractions With Different Denominators
This clip explains that subtracting fractions with different denominators requires first writing the two fractions with a common denominator. Once the numerators are determined, it is simply a matter of subtracting the smaller from the larger and ex...
Subtracting Fractions: Subtracting Fractions With the Same Denominator
This clip explains that subtracting fractions which have the same denominator simply requires that the smaller of the numerators be subtracted from the larger of the numerators, all over the denominator.
Subtracting Fractions: Subtracting Mixed Numbers
This clip explains that, when subtracting mixed numbers, "Â…the safest thing is to change them both to improper fractions and use the rules for fractions."
Subtracting Fractions: Summary: Subtracting Fractions
This clip summarizes subtracting fractions, explaining that the first step is to express the fractions with a common denominator. The clip also states that we can easily subtract mixed numbers by changing them to improper fractions.