Grade 8 Rational Numbers Worksheets


Grade 8 Maths Rational Number Multiple Choice Questions (MCQs)

1. Associative property is not followed in ……………… .
(a) whole numbers
(b) integers
(c) natural numbers
(d) none of these
2. …………………… is the identity for the addition of rational numbers.
(a) 1
(b) 0
(c) -1
(d) frac{1}{2}
3. ………………… is the multiplicative identity for rational numbers.
(a) 1
(b) 0
(c) -1
(d) frac{1}{2}
4. The additive inverse of frac{7}{5} is:
(a) 1
(b) 0
(c) – frac{7}{5}
(d) frac{7}{5}
5. What number should be added to frac{7}{12} to get frac{4}{15}?
(a) – frac{19}{60}
(b) – frac{11}{30}
(c) frac{51}{60}
(d) frac{1}{20}
6. What number should be subtracted from –frac{3}{5} to get -2?
(a) – frac{7}{5}
(b) – frac{13}{5}
(c) frac{13}{5}
(d) frac{7}{5}
7. Which of the rational numbers CBSE Class 8 Maths Rational Number Worksheets 1 is the smallest?
(a) frac{-5}{16}
(b) frac{-13}{24}
(c) frac{3}{-4}
(d) frac{7}{-12}
8. Rational number frac{3}{40} is equal to:
(a) 0.75
(b) 0.12
(c) 0.012
(d) 0.075
9. A rational number between frac{3}{5} and frac{4}{5} is
(a) frac{7}{5}
(b) frac{7}{10}
(c) frac{3}{10}
(d) frac{4}{10}
10. Find x such that frac{3}{5}=frac{x}{-25}
(a) -5
(b) -15
(c) -15
(d) none of these
11. Find x such that frac{-48}{x} = 2
(a) 24
(b) -12
(c) -24
(d) none of these
12. Find x such that frac{-3}{8} and frac{x}{-24} are equivalent rational numbers.
(a) 3
(b) 9
(c) 8
(d) none of these
13. Find the value of frac{3}{-5} 	imes frac{-5}{-3}
(a) -1
(b) 0
(c) 1
(d) none of these
14. The equivalent rational number of frac{-6}{5} is
(a) frac{-3}{5}
(b) frac{12}{10}
(c) frac{-12}{10}
(d) none of these
15. Fill in the boxes with the correct symbol: frac{5}{-11} square frac{-5}{11}
(a) >
(b) <
(c) =
(d) none of these
16. Fill in the boxes with the correct symbol: frac{1}{-3} square frac{-1}{4}
(a) >
(b) <
(c) =
(d) none of these
17. Rewrite the rational number frac{-18}{48} in the simplest form.
(a) frac{-9}{24}
(b) frac{-3}{8}
(c) frac{3}{8}
(d) none of these
18. Rewrite the rational number frac{44}{-72} in the simplest form
(a) frac{22}{-36}
(b) frac{11}{-18}
(c) frac{11}{18}
(d) none of these
19. Write the next rational number in the pattern: CBSE Class 8 Maths Rational Number Worksheets 2
(a) frac{12}{25}
(b) frac{15}{25}
(c) frac{-15}{25}
(d) none of these
20. Write the next rational number in the pattern:CBSE Class 8 Maths Rational Number Worksheets 3
(a) frac{-5}{-30}
(b) frac{5}{-30}
(c) frac{4}{-30}
(d) none of these

Class 8 Maths Rational Number Fill In The Blanks

1. Zero has ………………… reciprocal.
2. The numbers ……………….. and ……………….. are their own reciprocals.
3. The reciprocal of -5 is …………………… .
4. Reciprocal of frac{1}{x}, where x ‰ 0 is ………………. .
5. The product of two rational number is always a ……………. .
6. The reciprocal of a positive rational number is ……………… .
7. The additive inverse of frac{-a}{b} is ………………… .
8. Reciprocal of frac{-3}{4} is ……………… .
9. The reciprocal of a negative rational number is ……………… rational number.
10. The rational number ……………… is equal to its negative.

Class 8 Maths Rational Number Very Short Answer Type Questions

1. What is the additive inverse of frac{-7}{11}?
2. What is the multiplicative inverse of 2 frac{3}{11} 	imes frac{1}{3}?
3. Which number lies between frac{1}{5} and frac{1}{4}?
4. Find the product of frac{3}{8} and the reciprocal of frac{-5}{17}.
5. A tailor needs left(frac{9}{10}
ight)^{t h} of a metre of cloth to stitch a blouse. It he wants to stitch 100 blouses how much cloth will be needed?
6. The sum of the additive inverse and multiplicative inverse of 3 is ………………. .

Class 8 Maths Rational Number Short Answer Type Questions

1. The number which is subtracted from frac{29}{13} to get frac{-5}{7} is ………………. .
2. The value of x for which the two rational numbers frac{4}{9}, frac{x}{54} are equivalent.
3. frac{5}{6} of all the money in Salma’s bank account is ‚¹ 55,000. How much money does Salma have in her bank account?
4. Arrange the number frac{1}{4}, frac{13}{16} and frac{5}{8} in the ascending order.

Class 8 Maths Rational Number Long Answer Type Questions

1. Simplify:
CBSE Class 8 Maths Rational Number Worksheets 4
2. The cost of 3frac{1}{2} kg of wheat is ‚¹ 63. How much will 1frac{1}{4} kg of wheat cost?
3. Season tickets usually cost ‚¹ 120frac{4}{5} per person. For students, they are priced at frac{1}{4} of the normal cost. How much will 6 tickets will cost for students?

Worksheets for Class 8 Maths