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...
Addition of Whole Numbers, Part 2: Summary: Addition of Whole Numbers, Part Two
This clip summarizes the process of finding the sum of two or more whole numbers and, in so doing, revisits the use of expanded notation.
Addition of Whole Numbers, Part I: Order of Addends
This clips explains that, when we add, we can arrange and group the addends in any order we like. The answer will always be the same.
Addition of Whole Numbers, Part I: Basics of Addition, The
This clip explains that the basic idea behind adding whole numbers is combining smaller groups--called addends--to form a larger one--known as the sum.
Adding Signed Numbers: Exercise in Adding Signed Numbers
This clip provides exercises to help students better understand how to add signed numbers. It references two rules, one of which is utilized when the signs are the same, the other of which applies when the signs are different.
Adding Signed Numbers: Adding Numbers With Different Signs
This clip explains the rule for adding numbers with different signs. "Subtract the absolute value of the addends to get the absolute value of the answer," the clip advises. "As for the sign of the answer, it's the same as the sign of the addend with...
Adding Signed Numbers: Adding Two or More Numbers With the Same Sign
This clip explains that when adding two or more numbers with the same sign, to get the absolute value of the answer, we add the absolute value of the addends. "As for the sign of the answer," the clip continues, "
it's the same as the sign of the a...
Adding Signed Numbers: Adding Negative Numbers
This clip explains the rule for adding two negative numbers: to get the absolute value of the answer, add the absolute values of the addends. "As for the sign of the answer," the clip continues, "
it's the same as the sign of the addends."
Adding Signed Numbers: Adding Positive Numbers
This clip explains the rule for adding positive numbers: to get the absolute value of the answer, add the absolute values of the addends. "As for the sign," the clip continues, "
it will be positive
same as the two addends."