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 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.
When the Elimination Method is Easiest
How to decide whether substitution or elimination is the better method for solving a system of equations when both equations are in the same form and neither has been solved for a variable.
Addition of Whole Numbers, Part 2: Carrying
This clip explains what it means to carry when adding multi-digit whole numbers.
Addition is a Binary Operation
The rule for adding numbers.
What is a Term?
The definition of a term within an algebraic expression.
Addition of Whole Numbers, Part 2: Three Things to Remember About Addition of Whole Numbers
This clip reviews the key points about adding whole numbers. The first of these is that there are 100 addition facts that need to be memorized. The second is the idea of expanded notation. Third is the notion that, when we add, we can rearrange and ...
Addition of Whole Numbers, Part 2: Three Practical Problems
This clip provides three real-world examples of how the ability to add whole numbers can be useful. The examples include calculating the following: the total number of miles driven during a multi-day trip, the total number of people who attended sev...
Addition of Whole Numbers, Part I: Addition Tricks and Hints
This clip presents a variety of hints and tricks that make learning the 100 addition facts simple and automatic. Among these are the identity for addition, and re-grouping addends in the easiest possible order.
Addition of Whole Numbers, Part I: Summary: Addition of Whole Numbers, Part One
This clip summarizes some of the main ideas that pertain to the addition of whole numbers, including the concept of combining smaller numbers, known as addends, to form a larger number, called the "sum," as well as learning the 100 addition facts so...