CBSE Class 7 Mathematics Rational Numbers Assignment Set B

Read and download free pdf of CBSE Class 7 Mathematics Rational Numbers Assignment Set B. Get printable school Assignments for Class 7 Mathematics. Class 7 students should practise questions and answers given here for Chapter 9 Rational Numbers Mathematics in Class 7 which will help them to strengthen their understanding of all important topics. Students should also download free pdf of Printable Worksheets for Class 7 Mathematics prepared as per the latest books and syllabus issued by NCERT, CBSE, KVS and do problems daily to score better marks in tests and examinations

Assignment for Class 7 Mathematics Chapter 9 Rational Numbers

Class 7 Mathematics students should refer to the following printable assignment in Pdf for Chapter 9 Rational Numbers in Class 7. This test paper with questions and answers for Class 7 Mathematics will be very useful for exams and help you to score good marks

Chapter 9 Rational Numbers Class 7 Mathematics Assignment

Question. p: Every fraction is a rational number.
q: Every rational number is a fraction.
Which of the following is correct?
(A) p is true and q is false.
(B) p is false and q is true.
(C) Both p and q are true.
(D) Both p and q are false.
Answer : A

Question. Which of the following is not a rational number(s)?
(A) -2/9
(B) 4/- 7
(C) -3/17
(D) √2/3
Answer : D

Question. p: All integers are rational numbers.
q : Every rational number is an integer.
Which of the following statements is correct?
(A) p is false and q is true.
(B) p is true and q is false.
(C) Both p and q are true.
(D) Both p and q are false.
Answer : B

Question. What type of a number is -3/0 ?
(A) A positive rational number.
(B) A negative rational number.
(C) Either a positive or a negative rational number.
(D) Neither a positive nor a negative rational number.
Answer : D

Question. Which among the following is a rational number equivalent to 5/3?
(A) -20/15
(B) 25/-15
(C) 25/15
(D) 15/25
Answer : C

Question. What type of a numerator does 7 have?
(A) Positive
(B) Negative
(C) Either positive or negative
(D) Neither positive nor negative
Answer : D

Question. Which of the following statements is true?
A) 3/-8 > -12/32
(B) 3/-8 = -12/32
(C) 3/-8 < -12/32
(D) 3/5 > 4/3
Answer : B

Question. If -4/7 = -32/x, what is the value of x?
(A) -56
(B) 56
(C) 46
(D) -46
Answer : A

Question. Which is the greatest?
(A) -5/11
(B) 5/-12
(C) -5/17
(D) -5/13
Answer : C

Question. Which is the correct descending order of

""CBSE-Class-7-Mathematics-Rational-Numbers-Assignment-Set-B

Answer : B

Question. What is the average of the two middle rational numbers if 4/7. 1/3. 2/5 and 5/9 are arranged in ascending order?
(A) 86/90
(B) 86/45
(C) 43/45
(D) 43/90
Answer : D

Question. What is the percentage of the least number in the greatest number of 3/5, 9/5, 1/5 and 7/5 ?
(A) 11(1/9)%
(B) 10%
(C) 20%
(D) 25%
Answer : A

Question. What is the difference between the greatest and least numbers of 5/9. 1/9 and 11/9?
(A) 2/9
(B) 4/9
(C) 10/9
(D) 2/3
Answer : C

Question. Which of the fo ll owing pairs represent the same rational number ?
(A) -7/21 and 1/3
(C) -5/-9 and 5/-9
(B) 1/3 and -1/9
(D) 8/-5 and - 24/15
Answer : D

Question. P :The quotient of two integers is always a rational number.
Q : 1/0 is not rational. Which of the following statements is true?
(A) P is true and Q is the cor rect explanation of P.
(B) P is fa lse and Q is the co rrect explanation of P.
(C) P is true and Q is false.
(D) Both P and Q are false .
Answer : A

Question. What is the result of 2 - 11/39 + 5/26 ?
(A) 149
(B) 149
(C) 149
(D) 149
Answer : B

Question. Which is the equiva lent of - 143/21 ?
(A) -6 + 17/21
(B) 6 + (17/21)
(C) (-6) + ( -17/21)
(D) - 6
Answer : C

Question. Of which property is - 7/5 + (2/-11 + -13/25) = (-7/5 + 2/-11) + -13/25 an exa mp le?
(A) Closu re property
(B) Commutative property
(C) Associative property
(D) Identity property
Answer : C

Question. Which of the following statements is correct?
(A) 0 is called the additive identity for rational numbers.
(B) 1 is called the multiplicative identity for rationa l numbers.
(C) The add itive i nverse of 0 i s zero itself.
(D) All the above.
Answer : D

Question. The sum of two rational numbers is -3. If one of the numbers is -7/5 find the other number.
(A) - 8/5
(B) 8/5
(C) -6/5
(D) 6/5
Answer : A

Question. What number should be added to -5/6 to get 3/2?
(A) -7/3
(B) 2(1/3)
(C) 8/3
(D) -8/3
Answer : B

Question. Which of the following statements is true?
(A) The reciproca ls of 1 and -1 are themselves.
(B) Zero has no reciprocal.
(C) The product of two rational numbers is a rational number.
(D) All the above.
Answer : D

Question. Name the property of multiplication illustrated by -4/3 x (-6/5 + 8/7) = (-4/3 X -6/5 ) + (-4/3 X 8/7)
(A) Associative property
(B) Commutative property
(C) Distributive property
(D) Closure property
Answer : C

Question. What is the product of a rational number and its reciprocal?
(A) 0
(B) 1
(C) - 1
(D) 2
Answer : B

Question. The product of two rational numbers is - 9/16 If one of the numbers is -4/3 what is the other number?
(A) 36/48
(B) 25/64
(C) 27/49
(D) 27/64
Answer : D

Question. By what rational number should -8/39 be multiplied to obtain 26 ?
(A) 507/4
(B) - 507/4
(C) 407/4
(D) - 407/4
Answer : B

Question. How many pieces of equal size can be cut from a rope of 30 metres long, each measuring 3(3/4) metres?
(A) 8
(B) 10
(C) 6
(D) 12
Answer : A

Question. Evaluate p + q given p = ( -2 1/5) and q = (-1 1/3).
(A) 1(8/15)
(C) ( -2 8/15)
(B) ( - 3 8/15)
(D) 3(8/15)
Answer : B

Question. Compute 1(1/4) + (-8/3) - (-5/9)
(A) - 31/36
(B) 13/36
(C) 15/36
(D) -29/36
Answer : A

Question. Find the value of - 6 2/3 x 2/5
(A) 2(2/3)
(B) 2(1/5)
(C) -2(2/3)
(D) -2(1/3)
Answer : C

Question. For what value of 'x' is
7/8 - (- 11/4) + X = 3(7/24) ?

(A) 3
(B) 3
(C) 3
(D) - 3
Answer : A

Question. Determine 'y' so that Y- 2(1/3) = ( - 3 7/12)
(A) - 14
(B) 1'4
(C) - 112
(D) 112
Answer : A

Question. Find the simplest form of ( - 1/2 + 1/3 + 1/6) (-2/5)
(A) 5
(B) 0
(C) 1
(D) 5
Answer : B

Question. Rohit, Peter and Santosh walk around a circularpark.Theytake (1/3)h, (2/5)h and (5/12)h to complete one round. What is the total time taken by them to complete a round in minutes?
(A) 79 minutes
(C) 60 minutes
(B) 50 minutes
(D) 69 minutes
Answer : D

Question. Find a rational number between 3/4 and 9/11
(A) 1/2
(B) 13/11
(C) 69/88
(D) 1/4
Answer : C

 

RATIONAL NUMBER (Lowest form)

Question. Determine whether the following rational numbers are in the lowest form or not:
(i) (65/84) (ii) (-15/32)
Solution: (i) Given (65/84) Here we can observe that 65 and 84 have no common factor their HCF is 1.
Thus, (65/84) is in its lowest form.

(ii) Given (-15/32) Here we can observe that -15 and 32 have no common factor i.e., their HCF is 1.
Thus, (-15/32) is in its lowest form.


Question. Express each of the following rational numbers to the lowest form:
(i) (4/22) (ii) (-36/180)
Solution: (i) Given (4/22) We know that HCF of 4 and 22 is 2
By dividing the given number by its HCF we get
(4 ÷ 2/22 ÷ 2) = (2/11)
Therefore (2/11) is the simplest form of the given number

(ii) Given (-36/180)
We know that HCF of 36 and 180 is 36
By dividing the given number by its HCF we get
(-36 ÷ 36/180 ÷ 36) = (-1/5)
Therefore (-1/5) is the simplest form of the given number


Question. Fill in the blanks:
(i) (-5/7) = (…/35) = (…/49)
(ii) (-4/-9) = (…/18) = (12/…)

Solution: (i) (-5/7) = (-25/35) = (-35/49)

Explanation:
Given (-5/7) = (…/35) = (…/49)
Here (-5/7) × (5/5) = (-25/35)
And also (-5/7) × (7/7) = (-35/49)

(ii) (-4/-9) = (8/18) = (12/27)
Explanation: Given (-4/-9) = (…/18) = (12/…)
On multiplying by -2 we get
(-4/-9) × (-2/-2) = (8/18)
Also on multiplying by -3
(-4/-9) × (-3/-3) = (12/27)


Please click the link below to download CBSE Class 7 Mathematics Rational Numbers Assignment Set B

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