การคูณจำนวนตรรกยะ

What is reciprocal of

 $\frac{3}{5}$  

•  $-\frac{3}{5}$  

•  $-\frac{5}{3}$  

•  $\frac{5}{3}$  

•  $\frac{3}{5}$  

Tags

CCSS.6.NS.A.1

What is the product of two numbers that are reciprocal to each other?

• 0

• 1

• $-1$

• not a real number

Tags

CCSS.HSA.APR.D.7

What is the reciprocal of 5 ?

• $5$

• $-5$

• $\frac{1}{5}$

• $-\frac{1}{5}$

 $3.78\ \div4.2\$  
Before we do the division we must multiply the divisor and the dividend by what number?

• 0

• 10

• 100

• 1000

 $\frac{7}{8}\div\frac{1}{5}$  
What is the next step for the above division?

• divide by -5

• divide by 1/5

• multiply by 5

• multiply by 1/5

Tags

CCSS.7.NS.A.2B

 $-10\ \frac{1}{2}\div\frac{3}{4}=?$  

•  $14$ 

•  $-14$  

•  $\frac{84}{5}$  

•  $-\frac{84}{5}$  

Tags

CCSS.7.NS.A.2B

Find the product

 $\frac{6}{5}\times\frac{5}{8}$  

•  $\frac{15}{28}$  

•  $-\frac{3}{4}$  

•  $\frac{3}{4}$  

•  $\frac{30}{8}$  

Tags

CCSS.7.NS.A.2A

 $-\frac{7}{2}\div\left(-\frac{7}{5}\right)$  

•  $\frac{5}{2}$  

•  $\frac{49}{10}$  

•  $-2\ \frac{1}{2}$  

•  $-\frac{49}{10}$  

Tags

CCSS.7.NS.A.2B

True or False:

Before multiplying or dividing mixed numbers we should change them into improper fractions.

• True

• False

Tags

CCSS.7.NS.A.2A

What is the quotient of the following expression?

 $-2\ \frac{1}{5}\div\frac{-3}{7}$  

•  $-2\ \frac{1}{5}$  

•  $\frac{-3}{7}$  

•  $\frac{-33}{35}$  

•  $5\ \frac{2}{15}$  

Tags

CCSS.7.NS.A.2B