Real Number System

Name ______

1 Which is an irrational number? 5 Which of the following describes the set of rational A 0.81 numbers? B 2 C 9.02 A Rational numbers include only D 9.02 positive integers. B Rational numbers is the set of 2 Which number is NOT all numbers that can be a rational? expressed in the form of b ; a and b are integers and b is not A 0.2 equal to 0. B 3 C Rational numbers is the set of C 3.121221222… all numbers that can be D 4.7 expressed in the form of a fraction. The denominator 3 Which of the following is the must be equal to 0. set of natural numbers? D Rational numbers is the set of all negative real numbers. A … -3, -2, -1, 0, 1, 2, 3, … B 0, 1, 2, 3 6 The number -3 is which of the C 1, 2, 3, 4 following? D Any number that can be written in the form of a A An even number b B A real number C An irrational number 4 What is the name for the set of D An infinite number numbers that includes the nonrepeating, nonterminating 7 Which statement is true decimals? concerning the number 2 ? A Irrational numbers A It is a rational number. B Natural numbers B It is a natural number. C Rational numbers C It is an irrational number D Whole numbers D It is an integer. Real Number System

8 Which statement is NOT true about rational numbers? 12 Which of the following sets of numbers best describes 2? A Whole numbers are rational numbers. A Rational B Only prime numbers are B Rational and integers rational. C Rational, integers, and whole C Negative integers and fractions D Rational, integers, whole, and are rational numbers. natural numbers D Zero is a rational number. 13 Which of the following sets of 9 Which statement is true? numbers best describes -18?

A All rational numbers are A Rational integers. B Rational and integers B All whole numbers are C Rational, integers, and whole irrational. D Rational, integers, whole, and C All whole numbers are integers. natural numbers D All integers are whole numbers. 14 Which of the following sets of 10 Which statement is true? numbers best describes 0?

A All real numbers are rational. A Rational B All irrational numbers are real. B Rational and integer C All integers are natural C Rational, integers, and whole numbers. D Rational, integers, whole, and D All rational numbers are natural numbers irrational. 15 Which of the following sets of 11 Which statement is true? numbers best describes -9.25?

A All integers are rational A Rational numbers. B Rational and integers B A number can be both rational C Rational, integers, and whole and irrational. D Rational, integers, whole, and C Every integer is a whole natural numbers number. D All real numbers are rational.