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Objective Questions on Rational Numbers

Practice the objective questions on rational numbers. The questions are based on rational numbers (i.e. adding, subtracting, multiplying, dividing, arranging, equivalent and standard form of rational numbers).

Tick (✔) the correct answer:

1. The sum of the rational numbers – 8/19 and -4/57 is _____

(a) -5/57

(b) 7/22

(c) -28/57

(d) 4/27

2. What number should be added to 3/8 to get -1/24?

(a) -5/12

(b) -7/23

(c) 31/72

(d) 2/33

3. Which of the rational numbers 4/9, -5/6, -7/-12 and 11/-24 is the smallest?

(a) 4/9

(b) -5/6

(c) -7/-12

(d) 11/-24

4. Which of the rational numbers -4/9, 5/-12, 7/-18, 2/-3 is the greatest?

(a) 7/-18

(b) -4/9

(c) 2/-3

(d) 5/-12

5. Simplify: 2/3 + -4/5 + 7/15 + -11/20

(a) -1/5

(b) -13/60

(c) -4/15

(d) – 7/30

6. What number should be subtracted from -3/4 so as to get 5/6?

(a) -3/10

(b) -5/24

(c) -19/12

(d) 9/25

7. Which of the following rational numbers is in the standard form?

(a) -9/28

(b) -26/78

(c) –14/16

(d) 48/-96

8. The sum of two rational numbers is -7. If one of the numbers is –15/19, the other number is _____

(a) -21/10

(b) -57/16

(c) 7/9

(d) -118/19

9. Which of the following forms a pair of equivalent rational numbers?

(a) 24/40 and 35/50

(b) -25/35 and 55/-77

(c) -8/15 and -24/48

(d) 9/72 and -3/21

10. The value of {-8/13 × 26/-3} is _____

(a) -8/13

(b) -7/26

(c) -4/13

(d) 16/3

11. The reciprocal of a negative rational number _____

(a) is a positive rational number

(b) is a negative rational number

(c) can be either a positive or a negative rational number

(d) does not exist

12. The value of (- 16/21 ÷ -4/3) is _____

(a) -3/10

(b) -7/21

(c) 4/7

(d) -7/6

13. Fill in the blanks: 5/12 ÷ (_____) = -35/18

(a) -21/36

(b) -12/19

(c) -5/18

(d) -3/14

14. The product of two numbers is -20/9. If one of the numbers is 4, find the other.

(a) –5/9

(b) 3/11

(c) 12/39

(d) –9/11

Answers for the objective questions on rational numbers are given below to check the exact answers of the above multiple choice questions on rational numbers.

Answers:

1. (c)

2. (a)

3. (b)

4. (a)

5. (b)

6. (c)

7. (a)

8. (d)

9. (b)

10. (d)

11. (b)