Real Number System

 $\sqrt{25}$  **Hint: take the square root of 25. What number times itself equals 25?

• irrational

• rational

• integer

• whole number

• natural number

 $\sqrt{20}$  

• irrational

• rational

 $\pi$  

• irrational

• rational

Check all the words that classify this number.  $0$  

• irrational

• rational

• integer

• whole number

Check all the words that classify this number.   $\frac{1}{3}$  

• irrational

• rational

• integer

• whole number

Is 8.27 rational or irrational?

• Rational

• Irrational

What is the definition of an integer?

• All positive and negative whole numbers

• Decimals or fractions that terminate for repeat

• Only POSITIVE whole numbers

Check the word that does not classify -14. (negative 14)

• Integer

• Real

• Rational

• Whole

Classify the number 3. **Read each one carefully.

• natural, whole, integer, rational, real

• whole, integer, rational, real

Is this number rational or irrational?

 $.\overline{81}$  

• rational

• irrational