1) The value of (-10/3) x (-15/2) x (17/19) x 0 is: a) 20 b) 35 c) 0 d) 100 2) Which of the following statements is true? a) Multiplication is not associative for rational numbers b) Division is commutative for rational numbers. c) Rational numbers are closed under Subtraction. d) Multiplication is distributive over only Addition. 3) Which of the following is not an equivalent rational number for 5/12?  a) 15/36 b) 35/72 c) 50/120 d) 20/38 4) What is the reciprocal of -3/8 × (-17/13) a) 104/21 b) -104/21 c) 21/104 d) None of These 5) The additive identity for rational numbers is a) 1 b) -1 c) 0 d) none of these. 6) a(b + c) = ab + ac is called a) commutative law b) associative law c) distributive law d) none of these. 7) Which of the following statements is true? a) Natural numbers are closed under division b) Whole numbers are not closed under division c) Integers are closed under division. d) Rational numbers are closed under division. 8) The multiplicative inverse of the reciprocal of -7/9 is a) -9/7 b) 9/7 c) -7/9 d) 7/9 9) The rational number that does not have a reciprocal is a) 0 b) 1 c) -1 d) 12 10) A train travels 1445/2 km in 17/2 hours. Find the speed of the train. a) 80km/hr b) 85km/hr c) 90km/hr d) 95km/hr 11) If a and b are two rational numbers, then a) a+b/2  < a b) a+b/2 < b c) a+b/2 = a d) a+b/2 = b 12) In a school, 2/5 of the students are boys. If there are 60 girls, find the number of students. a) 360 b) 100 c) 480 d) 90 13) How many rational numbers lie between -1/4 and 1/4 a) 1 b) 2 c) 10 d) Unlimited 14) Which rational number lies between -1/6 and 2/3 a) 1/3 b) 2/3 c) -1/6 d) 2 15) One coin weighs 23/4. Find the weight of 12 such coins.   a) 60 b) 69 c) 71 d) 74 16) If the product of any two rational numbers is 2 and one of them is 1/7, find the other? a) 1/14 b) 14/3 c) 14/1 d) 1.4 17) Solve : 3/4 + 3/2 a) 4/9 b) 9/4 c) 12/11 d) None of These 18) Solve : 5/3 ÷ 15/18 a) 1/2 b) 2 c) 6/5 d) 1 19) Solve : 6/5 - 3/2 a) 3/10 b) 10/3 c) -3/10 d) -10/3 20) Evaluate : 24/5 ÷ [6/2 × 8/3] a) 1/6 b) 8/5 c) 12/7 d) 3/5

Rational Numbers Quiz

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