Number system

 $2\sqrt{3}+\ \sqrt{3}$  is equal to 

•  $2\sqrt{6}$  

• 6

•  $3\sqrt{3}$  

•  $4\sqrt{6}$  

 $\sqrt{10}\ \times\sqrt{5}$  is equal to

•  $\sqrt{15}$  

•  $\sqrt{150}$  

•  $\sqrt{50}$  

• 5

Tags

CCSS.6.EE.A.3

CCSS.6.EE.A.4

The number obtained on rationalizing the denominator of  $\frac{1}{\sqrt{7}-2}$  is

•  $\frac{\sqrt{7}+2}{3}$  

•  $\frac{\sqrt{7}-2}{3}$  

•  $\frac{\sqrt{7}+2}{5}$  

•  $\frac{\sqrt{7}-2}{5}$  

 $\frac{1}{\sqrt{9}-\sqrt{8}}$  is equal to

•  $\sqrt{9}-\sqrt{8}$  

•  $\frac{\sqrt{9}-\sqrt{8}}{1}$  

•  $3-\sqrt{8}$  

•  $3+\sqrt{8}$  

All whole numbers are rational numbers

• True
• False

Tags

CCSS.6.NS.C.6

What are your counting numbers (1,2,3..)?

• Rational Numbers
• Whole Numbers
• Natural Numbers
• Irrational Numbers

Tags

CCSS.K.CC.A.1

CCSS.K.CC.A.3

CCSS.K.CC.B.4

CCSS.K.CC.B.5

A repeating decimal or decimal that terminates is called a 

• Natural Number
• Irrational Number
• Rational Number
• Whole Number

Tags

CCSS.6.NS.A.1

CCSS.6.NS.C.6

What is an example of an irrational number?

• -2/3
• .75575557654..
• 23
• 0

Tags

CCSS.8.NS.A.1

question 9

• 
• 
• 
• 

question 10

• 
• 
• 
•