Class 8 - Rational Numbers Worksheet 1
1. If a⁄b is a rational number, then b is always a whole number. Mark true/ False
a) True b) False
2. If c ≠ 0, then the multiplicative inverse of c⁄d is d⁄c. Mark true/ false.
a) True b) False
3. If m⁄n is a rational number, then m is not equal to zero. Mark True / False.
a) True b) False
4. If t⁄u is a rational number, and u cannot be equal to 0. Mark True / False.
a) True b) False
5. The population of USA in 2005-06 is a rational number. Mark True / False.
a) True b) False
6. If A and B are rational number then A − B = B − A. Mark True/False.
a) True b) False
7. 0 is a rational number. Mark True/ False.
a) True b) False
8. Closure property of rational number closed under Division. Mark True/ False.
a) True b) False
9. Infinite rational numbers are present in between two rational numbers. Mark True/False.
a) True b) False
10. Multiplicative identity of rational number is 0. Mark True/ False.
a) True b) False
11. Multiplicative inverse of a negative rational number is _____.
a) 0 b) A positive rational number
c) 1 d) A negative rational number
12. If 'r' is the reciprocal of rational number 's', then the reciprocal of 'r' will be _____.
a) s⁄r b) s
c) r⁄s d) r
13. (312 × 521)-1 = (312)-1 × _____.
a) 1⁄312 b) 521
c) 1⁄162,552 d) 1⁄521
14. Simplify 31⁄3 + 21⁄12 × 25⁄11.
a) 45⁄115 b) 152
c) 1115⁄12 d) 1441⁄132
15. By what rational number should -11⁄12 be multiplied to get the product -11⁄20.
a) 3⁄5 b) 2⁄10
c) 3⁄12 d) 5⁄4
16. Divide the sum of -15⁄7 and 23⁄5 by their difference.
a) -3⁄45 b) -8⁄83
c) -5⁄35 d) -6⁄73
17. If 2⁄3 of a number exceeds its 1⁄5 by 35, find the number.
a) 105 b) 75
c) 80 d) 100
18. Sita walks 13⁄5 km from a point B towards East and then from there 22⁄5 km towards west. How far will she be now from B?
a) -4⁄5 Km b) 4⁄5 Km
c) 15⁄5 Km d) 12⁄25 Km
19. Area of a rectangular park is 89⁄20 sq. m. If the length of the park is 31⁄4 m, find its breath.
a) 35⁄7 m b) 23⁄5
c) 5⁄9 m d) 9⁄20
20. Find the area of a square park whose one side is 34⁄5 m long.
a) 1411⁄25 b) 213⁄25
c) 221⁄25 d) 521⁄25
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Rational Numbers Worksheet-1Download the pdf
Rational Numbers Worksheet - 1
Rational Numbers Worksheet - 2
Rational Numbers Worksheet - 3
Rational Numbers Worksheet - 4
Answer Sheet
Rational-Numbers-AnswerDownload the pdf
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