Real Number System

1. When is a number both rational and irrational?

A. When it is a mixed numberB. When it is a decimalC. When it is negativeD.

When it is an improper fraction

E. Never

Direction: Click on the link for your best choice.

2. Simplify: |-36| / 6

A. 6B. - 6C. 30D. 216

3. Classify the real number 1.2348987645697.....

A. RationalB. IrrationalC. Rational and IntegerD. Natural, Whole, Integer,

and Rational

4. Which number is not whole?

A. 0B.√49C. -1

5. π (pi) is which of the following

A. IrrationalB. Irrational and IntegerC. RationalD. Rational and IntegerE. Rational and Irrational

6. What is the smallest whole number?

A. -1B. 1C. 0D. 0.5D. -0.5

7. The symbol used to represent the set of rational numbers is _____.

A. RB. WC. QD. ZE. I

8. Simplify: (-2)x(-6)x(-7)

A. 15B. 84C. -15D. -84

9.) x + 9 = 9 + x  is an example of which property?

A. Associative Property of Addition

B. Additive IdentityC.

Commutative Property of Addition

D. Additive Inverse

10. The square root of 31 is in which subset?

A. Natural numbersB. Counting numbersC. Rational numbersD. Irrational numbers

11. ( x + 5 ) ( 7 + x ) = ( x + 5 )•( 7 )+( x + 5 )•( x )is an example of which property?

A. Associative Property of AdditionB.

Commutative Property of Multiplication

C. Associative Property of Multiplication

D. Distributive Property

12. Back in your school days, you were taught how to plot numbers on a number-line, even the more offbeat ones like -59/3 and the square root of two. Where on the real number line should I be plotted?

A. Somewhere between 3 and -(infinity)B. It can't be plotted anywhereC. Exactly at 0D. Somewhere between -1 and 1

13. René Descartes (1637) first coined the term "imaginary number" in a derogatory sense in his "La Geometrie", because such numbers were thought not to exist. Who was the first to introduce the symbol "i" to denote the square root of -1?

A. Jean-Robert ArgandB. Herschel Pinkes Remochel Krustofski, a.k.a. "Krusty the Clown"C. Leonhard Euler D. Abraham de Moivre

14. x + ( y + 3 ) = (x + 3) + y is an example of which property?

A. Associative property of addition

B. Distributive propertyC. Additive identityD.

Commutative property of addition

15. Which number is not an integer?

A. √81B. 4.3333...C. -2D. 0E. 7/1

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God Bless!........

References Pictures:http://basineducation.uwex.edu/stcroix/Didyouknow/AliensAmongUs/Worms/Gif1.gif