Multiplying Fractions: Multiplying Fractions: Three Problems
This clip provides three practical problems to demonstrate when the ability to multiply fractions is useful. One example involves figuring out the area of a park. The clip points out that this type of problem is approached in the same way, regardles...
Multiplying Fractions: Multiplying Fractions With Numerators Other Than One
This clip explains what it calls the basic rule for multiplying fractions, which works for any number of fractions. The clip says to multiply all the numerators to get the numerator of the answer, and to do the same with all the denominators. The pr...
Multiplying Fractions: Multiplying Fractions and Canceling
This clip explains that, "
.when we multiply together two or more fractions, and the same number appears in a numerator and a denominator
we are allowed to divide through or 'cancel' in both places." The clip concludes by stating that, "
if you d...
Multiplying Fractions: Multiplying Fractions by Whole Numbers
This clip explains what it calls the first rule for multiplying a whole number by a fraction. The answer will be a fraction with a numerator and a denominator. The denominator will be the same as the denominator of the original fraction. The numerat...
Multiplying Signed Numbers: Multiplication by Negative 1
This clip explains that, "sometimes, in mathematics you want to change the sign. Then it's useful to remember that to do it, just multiply by negative 1. Whatever the original sign might have been, the new one will be the opposite."
Multiplying Fractions: Multiplying Two Fractions With Numerators of One
This clip explains what it calls the second rule for multiplying fractions, in which each fraction has a numerator of one. "When you multiply these fractions," the clip states, "
the answer will also be a fraction. Its numerator will be 1 times 1 o...
Multiplying Fractions: Multiplying Fractions by Fractions
This clip explains that before we address the topic of multiplying two fractions, we need to remind ourselves of one important use of multiplication. It then offers two examples of multiplication being used to determine the total area of a rug and a...
Multiplying Whole Numbers, Part 2: Practical Multiplication Problems
This clip presents practical problems which the student can try to solve using the facts presented thus far in the "Multiplying Whole Numbers" lesson.
Multiplying Whole Numbers, Part 3: Summary: Multiplying Whole Numbers, Part Three
This clip summarizes the key points in Part 3 of Multiplying Whole Numbers, whose goal is to teach students to multiply any whole numbers, however large. The key points include expanded notation, the 100 multiplication facts, arrays, and partial pro...
Metric System, The: Solving Conversion Problems: The Decimal Method and the Unit Cancellation Method
This clip explains how to solve unit conversion problems using the decimal method and the unit cancellation method. The clip points out that, "
the advantage of unit cancellation is that you're not likely to make mistakes with decimals. The advanta...