Positives and Negatives in Fractions

Presentation

•

Mathematics

•

7th Grade

•

Practice Problem

•

Easy

•

CCSS

7.NS.A.2B, 7.NS.A.2A, 7.NS.A.2D

Standards-aligned

Anna Peabody

Used 45+ times

FREE Resource

6 Slides • 9 Questions

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

Multiple Choice

Solve:

\frac{21}{-3}

-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

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.

Positives and Negatives in Fractions

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