Class 8 Rational Number
15 Questions
| Total Attempts: 337
CLASS 8 RATIONAL NUMBER
Questions and Answers
- 1.1. What should be added to -5/4 to get -1?
- A.
I. -1/4
- B.
II. 1/4
- C.
III. 1
- D.
IV. -3/4
- 2.2. What should be subtracted from -5/4 to get -1?
- A.
I. -1/4
- B.
II. 1/4
- C.
III. 1
- D.
IV. -3/4
- 3.3. Which of the following is the identity element?
- A.
I. 1
- B.
II. -1
- C.
III. 0
- D.
IV. None of these
- 4.4. Which of the following is the Multiplicative identity for rational numbers?
- A.
I. 1
- B.
II. -1
- C.
III. 0
- D.
IV. None of these
- 5.5. The sum of the rational numbers – 8/19 and -4/57 is _____
- A.
(a) -5/57
- B.
(b) 7/22
- C.
(c) -28/57
- D.
(d) 4/27
- 6.6. What number should be added to 3/8 to get -1/24?
- A.
(a) -5/12
- B.
(b) -7/23
- C.
(c) 31/72
- D.
(d) 2/33
- 7.7. Which of the rational numbers 4/9, -5/6, -7/-12 and 11/-24 is the smallest?
- A.
(a) 4/9
- B.
(b) -5/6
- C.
(c) -7/-12
- D.
(d) 11/-24
- 8.8. Simplify: 2/3 + -4/5 + 7/15 + -11/20
- A.
(a) -1/5
- B.
(b) -13/60
- C.
(c) -4/15
- D.
(d) – 7/30
- 9.9. What number should be subtracted from -3/4 so as to get 5/6?
- A.
(a) -3/10
- B.
(b) -5/24
- C.
(c) -19/12
- D.
(d) 9/25
- 10.10. Which of the following rational numbers is in the standard form?
- A.
(a) -9/28
- B.
(b) -26/78
- C.
(c) –14/16
- D.
(d) 48/-96
- 11.11. The sum of two rational numbers is -7. If one of the numbers is –15/19, the other number is _____
- A.
(a) -21/10
- B.
(b) -57/16
- C.
(c) 7/9
- D.
(d) -118/19
- 12.12. Which of the following forms a pair of equivalent rational numbers?
- A.
(a) 24/40 and 35/50
- B.
(b) -25/35 and 55/-77
- C.
(c) -8/15 and -24/48
- D.
(d) 9/72 and -3/21
- 13.13. The value of (- 16/21 ÷ -4/3) is _____
- 14.14. Fill in the blanks: 5/12 ÷ (_____) = -35/18
- 15.15. The product of two numbers is -20/9. If one of the numbers is 4, find the other.
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