Multiple Choice Questions- Rational Numbers Class 8 Notes | EduRev

Mathematics (Maths) Class 8

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Class 8 : Multiple Choice Questions- Rational Numbers Class 8 Notes | EduRev

The document Multiple Choice Questions- Rational Numbers Class 8 Notes | EduRev is a part of the Class 8 Course Mathematics (Maths) Class 8.
All you need of Class 8 at this link: Class 8

1. What should be added to -3/4 to get ‘-1’?

(i) 1/4
(ii) Multiple Choice Questions- Rational Numbers Class 8 Notes | EduRev
(iii) 1
(iv) Multiple Choice Questions- Rational Numbers Class 8 Notes | EduRev

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

(i)  -1/5
(ii) -13/60
(iii) - 4/15
(iv) - 7/30
3. Which of the following is the identity element under addition? 

(i) 1
(ii) –1
(iii) 0
(iv) none of these.

4.  Which of the following rational numbers is in the standard form?
(i) -9/28
(ii) -26/78
(iii) –14/16
(iv) 48/96
Hint: A rational number is said to be in the standard form, if its denominator is a positive integer and the numerator and denominator have no common factor other than 1.

5. Which of the following is neither positive nor a negative rational number?
(i) 1
(ii) 0
(iii) Such a rational number does not-exist
(iv) none of the above.

6. 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
Hint: First make the denominator of all the rational numbers same and then compare the numbers.

7. The reciprocal of a negative rational number _____
(i) is a positive rational number
(ii) is a negative rational number
(iii) can be either a positive or a negative rational number
(iv) does not exist 

8. Which of the following is the product of 7/8 and -2/21 ?

(i) -1/12
(ii) 1/12
(iii) -16/63
(iv) -147/16

9. Fill in the blanks: 5/12 ÷ (_____) = -35/18
(a) -21/36
(b) -12/19
(c) -5/18
(d) -3/14

10. 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 


ANSWERS:

1. (ii)
2. (ii)
3. (iii)
4. (i)
5. (ii)
6. (i)
7. (ii)
8. (i)
9. (iv)
10. (iv)

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