Using Division to Change Terms
In addition to addition, subtraction, and multiplication, division can be used to change the numbers in a system.
Using Parentheses in the Order of Operations
Parentheses indicate a package and are a tool for changing the order of operations.
Distributive Law Demonstrated
The distributive law of multiplication over subtraction defined and explained.
Compound Denominate Numbers: Summary: Compound Denominate Numbers
This clip reviews the key points involved in adding, subtracting, multiplying and dividing compound denominate numbers. Some of the topics covered include unit conversion to largest possible unit (adding), borrowing (subtraction), converting to the ...
Writing Algebraic Expressions
Introducing different ways to write algebraic expressions.
Multiplicative Inverses
Every number has an additive inverse. The concept of inverses in algebra is explained and the use of additive inverses is demonstrated.
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: Pairs of Numbers Whose Sum is Zero
This clip explains that any time we add 2 numbers with the same absolute value, but opposite signs, their sum will be zero.
Adding Like Terms
Demonstration of how to add like terms in an algebraic expression and application of this skill to a practical problem.