Multiplying +/- Fractions

To multiply two fractions...

• multiply the numerators and keep the denominators the same

• multiply the numerators and multiply the denominators.

• keep the numerators the same and multiply the denominators.

• guess and check.

Tags

CCSS.5.NF.B.6

When dividing two fractions, you first have to

• make one fraction negative

• multiply them together

• change division to multiplication and then flip the second fraction

• flip the first fraction and multiply

Tags

CCSS.6.NS.A.1

When multiplying or dividing two numbers with the same sign (neg x neg or pos x pos) ...your answer will be....?

• Negative

• Zero

• Positive

• No Sign

Tags

CCSS.7.NS.A.2A

CCSS.7.NS.A.2B

When multiplying or dividing two numbers with different signs (neg x pos) ...your answer will be....?

• Negative

• Zero

• Positive

• No Sign

Tags

CCSS.7.NS.A.2A

CCSS.7.NS.A.2B

What would be the sign of the answer to the following problem? 

 $\left(\frac{2}{3}\right)\ \times\left(\frac{-1}{5}\right)$  

• Positive

• Negative

Tags

CCSS.7.NS.A.2A

What would be the sign of the answer to the following problem? 

 $\left(\frac{-1}{2}\right)\ \times\left(\frac{-3}{4}\right)$  

• Positive

• Negative

Tags

CCSS.7.NS.A.2A

Write your answer in simplest form. 

 $\frac{2}{3}\ \times\ \left(\frac{-5}{4}\right)$  

• -10/12

• -5/6

• -1/3

• 5/6

Tags

CCSS.7.NS.A.2A

 $\frac{-1}{4}\div\frac{-4}{9}$  

•  $-1\frac{7}{9}$  
  

•  $1\frac{7}{9}$  
  

•  $\frac{-9}{16}$  

•  $\frac{9}{16}$  

Tags

CCSS.7.NS.A.2B

 $\frac{-5}{4}\div\frac{1}{3}$  

•  $\frac{-5}{12}$  
  

•  $\frac{5}{12}$ 

•  $-3\ \frac{3}{4}$  
  

•  $3\ \frac{3}{4}$  
  

Tags

CCSS.7.NS.A.2B

 $\frac{1}{2}\ \div\ \frac{3}{5}\ =$  
Multiply and write in simplest form. 

•  $\frac{5}{6}$  

•  $\frac{-5}{6}$  

•  $\frac{3}{10}$  

•  $\frac{-3}{10}$  

Tags

CCSS.7.NS.A.2B