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.
Dividing Signed Numbers: Dividing Positive by Negative and Negative by Positive
This clip explains that, when dividing signed numbers, if the divisor and dividend have different signs, the quotient is negative.
Adding Signed Numbers: Adding Numbers With Different Signs
This clip explains the rule for adding numbers with different signs. "Subtract the absolute value of the addends to get the absolute value of the answer," the clip advises. "As for the sign of the answer, it's the same as the sign of the addend with...
Adding Signed Numbers: Adding Two or More Numbers With the Same Sign
This clip explains that when adding two or more numbers with the same sign, to get the absolute value of the answer, we add the absolute value of the addends. "As for the sign of the answer," the clip continues, "
it's the same as the sign of the a...
Adding Signed Numbers: Pairs of Numbers Whose Sum is Zero
This clip explains that any time we add 2 numbers with the same absolute value, but opposite signs, their sum will be zero.
Adding Signed Numbers: Adding Negative Numbers
This clip explains the rule for adding two negative numbers: to get the absolute value of the answer, add the absolute values of the addends. "As for the sign of the answer," the clip continues, "
it's the same as the sign of the addends."
Adding Signed Numbers: Adding Positive Numbers
This clip explains the rule for adding positive numbers: to get the absolute value of the answer, add the absolute values of the addends. "As for the sign," the clip continues, "
it will be positive
same as the two addends."