Exponents: Factors and Powers
This clip explains that there's a shortcut one can use instead of repeating the same factor over and over again in a multiplication problem. As an example, the clip states that, "
writing 4 to the seventh power or 4 to the power of seven
" is easi...
Renaming Fractions: Reducing Fractions
This c lip explains the process of renaming fractions in lower terms, which is called "reducing" the fraction. While renaming fractions in higher terms is accomplished by multiplying through, renaming (or reducing) the fraction in lower terms is acc...
Solve: m2 7m 12 = 0
Practice solving a quadratic equation: m2 7m 12 = 0.
Compound Denominate Numbers: Compound Units
This clip presents several practical problems involving compound units. The problems include calculating a car's speed in miles per minute; the number of gallons of gas used; the force per square foot exerted by a waterbed; and the speed of sound ex...
Compound Denominate Numbers: Practical Problems: Multiplying Compound Denominate Numbers
This clip includes practical problems that are solved by multiplying compound denominate numbers. The first of these involves figuring out the area of a rug, followed by a problem about the square footage of an office and the amount of rent due each...
Compound Denominate Numbers: Multiplying Compound Denominate Numbers
This clip explains how to multiply compound denominate numbers. The clip points out that, "
in multiplication, we don't work in columns as we do in addition
and, to multiply, the units must be the same
.(so) we convert both compound denominate nu...
Dividing Signed Numbers: Introduction to Dividing Signed Numbers
This clip explains that the rules for dividing signed numbers are the same as for multiplying signed numbers, "
except, of course, that we divide the absolute values instead of multiplying." When the signs are the same, the quotient is positive. Wh...
Fluid Volume: Practical Problems: Unit Equivalences
This clip includes several practical problems which are solved in part through the use of unit equivalences and the unit cancellation method taught in an earlier lesson.
Practical Problem: Pricing a Product and Maximizing Profit
Using a quadratic equation with two variables to solve a practical problem involving product pricing.
Prime Numbers: Prime and Composite Numbers
This clip explains the difference between prime numbers and composite numbers. It also talks about how the Greeks figured out which numbers are primes and which are not.