Adding Fractions With the Same Denominator: Changing Mixed Numbers to Improper Fractions
This clip explains that we have to change a mixed number to an improper fraction whenever we want to add, subtract, multiply or divide fractions. The clip then provides a shortcut for changing mixed numbers to improper fractions.
Adding Fractions with Different Denominators: Finding the Least Common Multiple
This clip explains the use of prime factorization in finding the least common multiple.
Adding Fractions with Different Denominators: Least Common Multiple, The
This clip explains that using the least common multiple (which is another way of saying the smallest common multiple) as the common denominator is the simplest way to add fractions.
Adding Fractions With the Same Denominator: Summary: Adding Fractions With the Same Denominator
This clip summarizes adding fractions with the same denominator. It explains that the process can involve improper fractions as well as mixed numbers, and the conversion of mixed numbers to improper fractions and vice-versa.
Adding Fractions with Different Denominators: Renaming Fractions
This clip introduces the concept of adding fractions with different denominators. It explains that this is done by re-naming the fractions so that they have the same denominator, which is accomplished by finding the common denominator.
Weight and Temperature: Converting Between Metric and U.S. Customary Systems
This clip explains how to convert units of weight between the U.S. Customary System and the Metric System, using both the unit cancellation and decimal methods. "Converting between the two systems means that we'll be working with two sets of equival...
Weight and Temperature: Metric Unit Equivalences and Conversion
This clip explains that, while there are 7 metric equivalences, we'll use only those that contain the following common metric units to convert units of mass: one metric ton equals 1,000 kilograms; one kilogram equals 1,000 grams; and one gram equals...
Weight and Temperature: Units of Weight and Unit Equivalences
This clip presents the units of weight in the U.S. Customary System, then provides a number of practical problems that can be solved by using the equivalences for ounce, pound and ton.
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.