Dividing Decimal Fractions: Dividing Decimals: Four Different Outcomes
This clip presents four different outcomes that may occur when dividing decimals: The first possibility is that the division comes out even "just as it stands, with no remainder." The second possibility is that the division comes out even only after...
Understanding Decimal Fractions: Exponential Notation
This clip helps students better understand decimals and the power of 10 by using exponential notation to explain the relationship between the decimal point and the numbers that come before or after it.
Understanding Decimal Fractions: Converting Decimals to Fractions and Fractions to Decimals
This clip explains that, "
.changing a decimal to a fraction or a mixed number isn't much trouble," then proceeds to illustrate that statement with examples. The clip adds that the fraction may be (but doesn't have to be) reduced to the lowest term...
Understanding Decimal Fractions: Zeros to the Right of the Decimal
This clip explains that adding extra zeros following a number or numbers to the right of a decimal point does not change the value of the decimal.
Signed Numbers: Introducing Negative Numbers
This clip uses the number line to illustrate that there can be negative numbers as well as positive numbers. Negative numbers on the number line are located to the left of the zero, rather than to the right.
Signed Numbers: Number Line Exercises
This clip offers practice in locating a set of numbers known as "the set of integers" on the number line. The clip explains that the integers include zero, but don't include any fractions, positive or negative.
Introducing Fractions: Summary: Introducing Fractions
This clip provides a summary of Introducing Fractions. It discusses how and why fractions are used, including for purposes of comparing one quantity with another, as a means by which to express division, and as a way to measure.
Dividing Decimal Fractions: Changing the Decimal Divisor to a Whole Number
This clip states that "mathematicians never divide by decimals. If the divisor is a decimal, they change it to a whole number." The clip then explains how this is done, with the divisor multiplied by some power of ten to become a whole number and th...
Dividing Decimal Fractions: Summary: Dividing Decimal Fractions
This clip summarizes dividing decimal fractions, explaining that, "
in any division problem involving decimals, the first step is to make sure the quotient is a whole number." The clip explains how that is done, then notes that "
we place the deci...
Dividing Fractions: Division as the Opposite of Multiplication
This clip explains that, "
division of fractions, like division of whole numbers, is expected to work as the opposite of multiplication." The clip then provides examples of how it does so, adding that the relationship between division and multiplic...