real number review

Real Numbers

REAL NUMBER SYSTEM

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Real Numbers Include

Multiple Choice

Rational Numbers are ......

• Any number that can be written as a fraction.

• Positive Integers

• Nonterminating Decimals

• Only whole numbers.

Multiple Choice

Irrational Numbers are ......

• Any number that can be written as a fraction.

• any number that cannot be expressed as a fraction

• terminating decimals

• Only whole numbers.

Set Examples

Multiple Choice

Rational or Irrational?

$$\sqrt{21}$$  

• Rational 

• Irrational

Multiple Choice

Rational or Irrational?

$$\sqrt{40}$$  

• Rational 

• Irrational

Multiple Choice

Rational or Irrational?

$$\sqrt{81}$$  

• Rational 

• Irrational

Multiple Choice

The set of whole numbers.

• ...1/2,,1,3/2,2,........

• 1,2,3,......

• ...,-3,-2,-1,0,1,2,3,......

• 0,1,2,3,......

Multiple Choice

The set of natural numbers.

• ...1/2,,1,3/2,2,........

• 1,2,3,......

• ...,-3,-2,-1,0,1,2,3,......

• 0,1,2,3,......

Multiple Choice

The set of integers.

• ...1/2,,1,3/2,2,........

• 1,2,3,......

• ...,-3,-2,-1,0,1,2,3,......

• 0,1,2,3,......

Multiple Choice

Fill in the blank

$$\sqrt{81}$$  ____ 9

• <

• >

• =

• $$\ne$$  

Multiple Choice

Fill in the blank

$$\sqrt{20}$$  ____ 9

• <

• >

• =

• $$\ne$$  

Multiple Choice

Fill in the blank

$$\sqrt{6.25}$$  ____ 250%

• <

• >

• =

• $$\ne$$  

Multiple Select

What sets does 6 belong to?

• Natural

• Whole

• Integer

• Rational

Multiple Select

What sets does this number belong to?

$$\sqrt{7}$$  

• Natural

• Whole

• Integer

• Irrational

• rational

Multiple Select

What sets does this number belong to? 

- $$\sqrt{81}$$   

• Natural

• Whole

• Integer

• Rational