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Real Number System. Direction: Click on the link for your best choice. 1. When is a number both rational and irrational?. When it is a mixed number When it is a decimal When it is negative When it is an improper fraction Never. 2. Simplify: |-36| / 6. 6 - 6 30 216.

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## Real Number System

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**Direction: Click on the link for your best choice.**1. When is a number both rational and irrational? When it is a mixed number When it is a decimal When it is negative When it is an improper fraction Never**2. Simplify: |-36| / 6**6 - 6 30 216**3. Classify the real number 1.2348987645697.....**• Rational • Irrational • Rational and Integer • Natural, Whole, Integer, and Rational**4. Which number is not whole?**0 √49 -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**9.) x + 9 = 9 + xis an example of which property?**Associative Property of Addition Additive Identity Commutative Property of Addition 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? Associative Property of Addition Commutative Property of Multiplication Associative Property of Multiplication 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 anywhere C. Exactly at 0 D. 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 Argand B. Herschel PinkesRemochelKrustofski, a.k.a. "Krusty the Clown" C. Leonhard Euler D. Abraham de Moivre**14. x + ( y + 3 ) = (x + 3) + yis an example of which**property? Associative property of addition Distributive property Additive identity Commutative property of addition**15. Which number is not an integer?**A. √81B. 4.3333...C. -2D. 0E. 7/1**References**• Pictures: http://basineducation.uwex.edu/stcroix/Didyouknow/AliensAmongUs/Worms/Gif1.gif

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