1) Which of the following is a rational number? a) √2 b) π c) -5/9 d) √3 2) The additive inverse of 7/9 is a) 9/7 b) -9/7 c) -7/9 d) none of these 3) Rational numbers are not closed under: a) Addition b) Subtraction c) Division by 0 d) Multiplication 4) Zero is the ______ identity. a) Additive b) Multiplicative c) Negative d) Positive 5) Which of these is not a rational number? a) 3/4 b) 0.25 c) 2/0 d) 1 6) Every integer is a rational number. a) True b) False 7) Rational numbers are not closed under subtraction. a) True b) False 8) The reciprocal of 0 exists. a) True b) False 9) Rational numbers can be represented on a number line. a) True b) False 10) Between any two rational numbers, only one rational number exists. a) True b) False 11) Negative rational numbers always lie to the right of zero. a) True b) False 12) A linear equation in one variable has only one solution. a) True b) False 13) We can add the same number to both sides of an equation. a) True b) False 14) Transposing a number changes its sign. a) True b) False 15) Which rational number is equal to its negative? a) 1 b) -1 c) 0 d) 5 16) The product of any two rational numbers is always: a) Natural number b) Whole number c) Rational number d) None of these 17) Which of the following is not a property of rational numbers? a) Associativity b) Closure c) Commutativity d) Trichotomy 18) The variable in the equation 2x + 3 = 7 is: a) 2 b) 3 c) x d) 7 19) What will be the solution of 3x = 9? a) 3 b) 6 c) 12 d) 9 20) Which is the correct definition of an equation? a) Statement with a variable b) Statement with equality sign c) Both A and B d) Statement with inequality 21) The expression 2x + 7 is: a) An equation b) A solution c) A variable d) An algebraic expression 22) The equation having no variable is called: a) Identity b) Linear equation c) Constant equation d) None 23) The equation x – 3 = -5 has solution: a) -2 b) 2 c) -8 d) 8 24) Subtracting the same number from both sides of an equation keeps it balanced. a) True b) False 25) All equations have at least one solution. a) True b) False

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