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 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.
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...