Signed Fractions: Summary: Signed Fractions
This clip summarizes signed fractions. It explains that negative fractions are just as useful as any other kind of negative number. The clip then re-visits the question of what exactly constitutes a negative fraction. It states that, if the numerato...
Signed Fractions: Why Negative Fractions Are Important
This clip explains that, "
it's just as important to introduce negative fractions as any other negative numbers." The clip then provides practical examples of how and when negative fractions are used, such as when money is owed or when the temperat...
Signed Fractions: Subtracting Signed Fractions
This clip provides a subtracting signed fractions problem in which negative 3/5 is subtracted from 4/5. The clip advises the student to "
change the sign of the subtrahend and change the subtraction to addition. The problem become 4/5 plus positive...
Signed Fractions: Adding Signed Fractions
This clip explains that the rules for working with signed fractions are exactly the same as for any other signed numbers. "Wherever you find the negative sign," the clips states, "
move it out in front of the entire fraction, then treat the fractio...
Signed Fractions: Dividing Signed Fractions
This clip explains that, when dividing signed fractions, the basic approach is the same as any operation with signed fractions. Once we figure out what's being divided into what, we divide the absolute values. And, in this instance, because the prob...
Signed Fractions: Solving Equations Whose Solutions Are Negative Numbers or 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 ...
Signed Fractions: Exercise on the Absolute Value of Fractions
This clip explains that, like signed whole numbers, signed fractions have absolute values "
and they work in exactly the same way. For example, the absolute value of 6/7 is just that, 6/7, but the absolute value of negative 6/7 is also 6/7."
Signed Fractions: Multiplying Signed Fractions
This clip explains that the freedom to move the negative sign out front makes multiplication of signed fractions exactly like multiplication of any signed numbers.