This clip explains that subtracting fractions which have the same denominator simply requires that the smaller of the numerators be subtracted from the larger of the numerators, all over the denominator.
This clip explains that, when subtracting mixed numbers, "
the safest thing is to change them both to improper fractions and use the rules for fractions."
This clip summarizes subtracting fractions, explaining that the first step is to express the fractions with a common denominator. The clip also states that we can easily subtract mixed numbers by changing them to improper fractions.
This clip explains that, now that we understand signed numbers and fractions, we can solve equations whose solutions are not necessarily whole numbers. The clip states that, "
in general, it doesn't matter whether our equations involve positive or ...
An introduction to the world of business math, rationale for studying the subject and an important look at the value of strong math skills.
This clip uses practical problems and simple equations to explain how the perimeter formula for rectangles can be used to find the length of an unknown side, when the perimeter and length of one side are known.
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. "...
A practical problem demonstrating multiplication of a binomial by a monomial.
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 ...
This clip introduces the use of parentheses in two-step problems, explaining that the first step is always to solve the problem inside the parentheses, and then use that answer to solve the main problem.