Multiplying Whole Numbers, Part 2: Multiplication Facts Table and Multiplication Facts for 1 and 0, The
This clip introduces a table as a means by which to learn multiplication facts. It also reviews multiplication of whole numbers by 1 and 0.
Multiplying Whole Numbers, Part 2: Multiplication Facts For 4 and 8
This clip suggests the use of arrays or the number line to learn the facts about multiplication by 4. It states that multiplication facts for 8 are essentially the same as those for 4 but doubled. The clip also reiterates the fact that multiplying a...
Multiplying Signed Numbers: Multiplying Positive Numbers by Negative Numbers
This clip explains that, to multiply a positive number and a negative number, "
multiply their absolute values and use the negative sign."
Multiplying Signed Numbers: Multiplying Two Numbers With Different Signs
This clip explains that, to multiply two numbers of different signs, in whatever order, "
first, multiply their absolute values, and then use the negative sign. We don't care which comes first, the positive number or the negative number."
Multiplying Whole Numbers, Part 2: Multiplication Facts For 5 and 2
This clip explains that when two factors change places in a multiplication problem, the product remains the same. It then explains the multiplication facts for 5 and 2, noting that exercises can be completed with the help of a number line. The clip ...
Negative Exponents: Multiplication Involving Negative Exponents
This clip explains negative exponents and how to deal with them. "Think of the whole business as a fraction with a denominator of 1," the clip states. "Then, to change the sign of the exponent, just invert the fraction." The clip notes that, "
this...
Negative Exponents: Basics of Working With Exponents, The
This clip explains the terms "exponent," "base" and "power," as well as the concept of exponents as a shortcut for multiplying a number by itself one or more times.
Multiplying Whole Numbers, Part 3: Multiplying by a Number With a Zero in the Middle
This clip explains that there's more than one way to multiply numbers with a zero in the middle. It suggests that for those just learning multiplication, there's less chance of error if one writes out the full row of zeroes in the partial product, r...
Multiplying Whole Numbers, Part 2: Multiplication Facts For 6, 9, and 7
This clip explains that, now that we can multiply by 3, multiplying by 6 is easy because, "
it's just a matter of taking steps twice as big." It goes on to say that "
the 9's facts are in a class by themselves," explaining that, with the exception...
Multiplying Whole Numbers, Part 2: Memorizing the Multiplication Facts With Tables
This clip advises that, even with the full multiplication table filled in, the real work is just beginning, because it's necessary to commit the multiplication facts to memory. The clip then provides strategies for how to approach this task, suggest...