Subtracting Signed Numbers: Subtracting a Negative Number From a Positive Number
This clip explains the steps necessary to solve a problem in which a negative number is subtracted from a positive number.
Subtracting Signed Numbers: Subtracting a Larger Number From a Smaller Number
This clip explains the steps necessary to solve a problem in which a larger number is subtracted from a smaller number.
Dividing Whole Numbers, Part 2: Summary: Dividing Whole Numbers, Part Two
This clip summarizes the key points in Part 2 of Dividing Whole Numbers, including the concepts of repeated subtraction and partial quotients. The clip also refers to long division, stating that what we've learned in this lesson is very much like lo...
Compound Denominate Numbers: Working With Metric Compound Denominate Numbers
This clip explains how working with metric compound denominate numbers differs from compound denominate numbers in the U.S. Customary System. "In the Metric System, we don't usually see a value like 21 meters 72 centimeters," the clip states. "Inste...
Compound Denominate Numbers: Practical Problems: Subtracting Compound Denominate Numbers
This clip includes a number of practical problems requiring the subtraction of compound denominate numbers. The clip reminds the student to work with one column at a time and to borrow when necessary.
Subtracting Whole Numbers: Subtraction Approaches: Take-Away and Missing Addend
This clip explains that subtraction is used to solve two different types of problems. In the first, we start with some things and remove--or take away--some or all of them. The other approach to subtraction, called the missing addend, "
is like goi...
Subtracting Signed Numbers: Using the Number Line to Subtract Signed Numbers
This clip explains how students can use the number line to more easily understand the subtraction of negative numbers. The clip also points out that one of the reasons signed numbers were invented "
(was so that) we can subtract any two numbers
la...
Subtracting Whole Numbers: Summary: Subtracting Whole Numbers
This clip summarizes how subtraction is used in two types of problems: those in which there's a "take-away" and those in which there's a missing addend. It also reviews the link between subtraction and addition, explaining how addition can be used t...
Subtracting Whole Numbers: Practical Subtraction Problems
This clip looks at how subtraction can be used to determine how much more money is needed to buy something, as well as how many more cars will fit in a parking lot.
Subtracting Whole Numbers: Subtraction Problems May Not Be Rearranged
This clip explains that, while the addends can be rearranged or regrouped in addition without affecting the answer, the same is not true in subtraction.