Multiplying and Dividing Rational Numbers

Multiplying and Dividing Rational Numbers

Pre Algebra - Chapter 7.6

Remember...a rational number can be written as a fraction.

• 5.3

• 3/7

• 9

Multiple Choice

Choose the number that is NOT rational

• 5.7

• $0.\overline{3}$
  

• $\pi$

• 8

Multiply:

 $\frac{3}{50}\ x\ 242\ \frac{1}{2}$  




5230.4 x 0.0025

Multiple Choice

Multiply. Make sure your final answer is in simplest form. 

• -7/8
• 7/8
• -63/72
• 63/72

Multiple Choice

Alexandra made a rectangular quilt that measured 3 and 1⁄4 feet in length by 2 and 3⁄4 feet in width. What is the area?
Reminder: to find the area, multiply the length and width. 

• 8 and 15⁄16 square feet
• 8 and 5⁄6 square feet
• 8 and 10⁄12 square feet

Multiple Choice

4.25 x 3.1

• 1.3175
• 13.175
• 131.75
• 1317.5

Divide:

 $2\ \frac{5}{6}\ \div\ \frac{1}{3}$  




-16.92 divided by 0.3

Multiple Choice

Calculate
5.75÷0.25

• 0.23
• 2.3
• 2.03
• 23

Multiple Choice

 $3\ \frac{1}{2}\div-2\ \frac{1}{6}$  

•  $-6\ \frac{1}{3}$  

•  $6\ \frac{1}{3}$  

•  $-1\ \frac{8}{13}$  

•  $\frac{42}{26}$  

Multiple Choice

 $\frac{1}{5}\div\frac{-2}{5}$  

•  $\frac{-1}{2}$  

•  $\frac{2}{10}$  

•  $\frac{1}{5}$  

•  $\frac{5}{10}$