Negative Exponents: Expanded Notation and Negative Exponents
This clip explains the use of negative exponents in expanded notation as a way of getting rid of fractions. As an example, the clip states that, "
7 times 1 over 10 becomes 7 times 10 to the power of negative 1. 8 times 1 over 10 to the power of 2 ...
Negative Exponents: Summary: Negative Exponents
This clip summarizes the lesson on negative exponents. It explains that when we say 4 to the power of negative 2, it means 1 over 4 to the power of 2. "If we think of the original number as a fraction with a denominator of 1," the clip states, "...w...
Naming Whole Numbers: Separating Large Numbers Into Periods
This clip explains the use of commas to organize the digits within a number into groups or periods.
Naming Whole Numbers: Expanded Notation
This clip explains that when we write a numeral using words such as "hundreds," "tens" and so on, or numbers like, say, "700," "80," and "9," we are using expanded notation, which makes it much easier to add, subtract, multiply and divide whole numb...
Multiplying Whole Numbers, Part 3: Review of Previous Multiplication Material
This clip reviews some of the key points from previous multiplication lessons, including expanded notation, the one hundred multiplication facts, and arrays.
Naming Whole Numbers: Summary: Naming Whole Numbers
This clip summarizes how whole numbers are named, and in the process covers decimal numerals, whole numbers, face value, place value and expanded notation.
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...
Understanding Decimal Fractions: Summary: Understanding Decimal Fractions
This clip summarizes the "Understanding Decimal Fractions" lesson, including use of the decimal point "to signal the units place of a number and then continue with digits to the right of the decimal point, signifying tenths, hundreds and so on." The...
Exponents: Summary: Exponents
This clip summarizes the key ideas in the exponents lesson, including powers, factors, bases, and the concepts of squared, square root, and cubed. It also explains how all these ideas can be used to develop a new form of expanded notation.
Understanding Decimal Fractions: Reading Decimal Fractions: Using Fractions
This clip explains how to read and say decimals using fractions. It includes an example in which two fractions with different denominators are added. Their sum is expressed with their common denominator in the fraction that results.