Positives and Negatives in Fractions

Positives and Negatives in Fractions

Remember! When Multiplying or Dividing...

• Same Signs = Positive answer

• Different Signs = Negative answer

Multiple Select

Which of the following will yield a Negative answer

• $\left(-2\right)\left(2\right)$

• $3\left(4\right)$

• $\frac{-28}{-14}$

• $\frac{6}{\left(-2\right)}$

There are many different Fractions we will see

We need to determine their overall sign (positive or negative)

Poll

What do you think the sign will be for:

 $-\frac{4}{5}$  

• positive

• negative

ONE negative = Negative Overall

No matter where they put the negative, if there is only ONE we can assume the whole problem will result in a NEGATIVE answer

Multiple Choice

Solve:

 $-\frac{14}{7}$  

• 2

• -2

Multiple Choice

Solve:

 $\frac{21}{-3}$  

• 7

• -7

Multiple Choice

What about this:

 $\frac{-17}{5}$  

• -3.4

• 3.4

TWO negatives or positives = positive overall

We may see fractions with TWO negatives!

Poll

Positive or negative overall?

 $\frac{-4}{-2}$  

• positive

• negative

Multiple Choice

Solve:

 $\frac{-90}{-5}$  

• 18

• -18

Multiple Choice

 $\frac{-10}{-4}$  

• 2.5

• -2.5

Multiple Choice

One more tricky one:

 $\frac{2\frac{1}{2}}{-4}$  

• Positive

• Negative

Remember, today we are looking at more RATES and UNIT RATES

To calculate the UNIT RATE divide by the unit measurement that you want to make into a 1.