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: 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.
Adding Fractions with Different Denominators: Summary: Adding Fractions with Different Denominators
This clip reviews the topic of adding fractions with different denominators. It explores three ways this can be done, including writing the multiples of each denominator until a common multiple is found; multiplying the original denominators; and fi...
Adding Fractions with Different Denominators: Shortcut for Common Denominators, A
This clip explains a very simple rule: To add two fractions with different denominators, simply multiply through the first fraction by the denominator of the second, and multiply through the second fraction by the denominator of the first. This will...