08:04
Adding Fractions with Different Denominators: Finding the Least Common Multiple
This clip explains the use of prime factorization in finding the least common multiple.
02:19
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.
04:18
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.
01:28
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...