Length: Practical Problems: Converting Between the U.S. Customary and Metric Systems
This clip presents three practical problems based on converting between the U.S. Customary and Metric Systems. In the first two problems, an equivalence is used to write a transition factor, which is the only factor needed. In the third problem, an ...
Length: Converting Inches to Yards, Feet to Miles, and Miles to Inches
This clip presents a variety of unit conversion problems which the student is first asked to write in equation form. The student is then instructed to write out fractions using the appropriate equivalence in each case. After cancellation, the studen...
Length: Practical Problem Involving Electrical Wire, A
This clip presents a practical problem involving the conversion of yards to meters. The student is asked to figure out how much electrical wire is left on a spool of 400 yards after an electrician uses 20 meters of wire for each of 16 apartments. "...
Multiplying Decimals: Rules for Multiplying Decimals
This clip explains the basic rules for multiplying decimals, stating that the first step is to multiply the numbers as if they were whole numbers, and then count up the number of digits to the right of the decimal point in both factors to determine ...
Multiplying Fractions: Summary: Multiplying Fractions
This clip summarizes multiplying fractions, touching on a number of the main rules that apply, revisiting the value of dividing through (or "canceling"), and finally discussing the conversion of mixed numbers to imperfect fractions and back again.
Multiplying then Simplifying Two Radicals
The procedure for simplifying radicals by beginning with multiplication is demonstrated.
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 ...
Word Problems: Turning Word Problems Into Number Sentences
This clip explains that students who have no trouble with ordinary arithmetic sometimes get confused by word problems. The clip then suggests ways to solve word problems by breaking them down into a series of steps.
Dividing Signed Numbers: Dividing Positive by Negative and Negative by Positive
This clip explains that, when dividing signed numbers, if the divisor and dividend have different signs, the quotient is negative.