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Class 7 Maths MCQ Questions for Rational Numbers with Answers?

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Practice the Class 7 Maths MCQ Questions for Rational Numbers with Answers. The questions are based on rational numbers from the syllabus of class 7 maths suggested by CBSE. We have provided Rational Numbers Class 7 Maths MCQs Questions with Answers to help students understand the concept very well. MCQ Questions for Class 7 Maths with Answers were prepared based on the latest exam pattern.

Our experts have developed really good Multiple Choice Questions covering all important topics in each chapter which are expected to come in upcoming tests and exams, as MCQ Questions are coming in all exams now therefore practice them carefully to get full understanding of topics and get good marks. 

Practice MCQ Questions for Class 7 Maths

1. If  \(\frac{3}{4}=\frac{?}{12}\) then ? =

(a) 3
(b) 6
(c) 9
(d) 12

2. If \(\frac{4}{5}=\frac{12}{?}\) then ? =

(a) 5
(b) 10
(c) 15
(d) 20

3. If \(\frac{-8}{-9}=\frac{-16}{?}\) then ? =

(a) 18
(b) -18
(c) 9
(d) -9

4. The rational number −21/28 in standard form is

(a) −3/4
(b) 3/4
(c) 3/7
(d) −3/7

5. The rational number −6/−25 in standard form is

(a) 6/25
(b) −6/25
(c) 6/-25
(d) −6/20

6. Which of the following rational numbers is not equivalent to 7/−4?

(a) 14/−8
(b) 21/−12
(c) 28/−16
(d) 7/−8

7. The sum 5/4 + (- 25/4) =

(a) -5
(b) 5
(c) 4
(d) -4

8. 17/11  – 6/11 =

(a) 1
(b) -1
(c) 6
(d) 3

9. 0 is not 

(a) a natural number 
(b) a whole number 
(c) an integer 
(d) a rational number

10. The given property a+b = b+a is known as: 

(a) Commutative property 
(b) Distributive Property 
(c) Associative Property 
(d) Closure property

11. If a,b and c are whole numbers, then a+(b+c) = (a+b)+c. This property is called 

(a) associative property 
(b) distributive Property 
(c) commutative property 
(d) Closure property

12. The additive identity of any rational number is _____. 

(a) 0 
(b) 1 
(c) -1 
(d) 2

13. 1 is the multiplicative identity for ........ 

(a) whole numbers 
(b) integers 
(c) rational numbers 
(d) all of the above

14. The additive inverse of 23 is 

(a) -23 
(b) 32 
(c) -32 
(d) all of the above

15. The rational number that does not have a reciprocal is 

(a) 0 
(b) 1 
(c) 4 
(d) -4

16. An integer can be: 

(a) Only Positive 
(b) Only Negative 
(c) Both positive and negative 
(d) None of the above

17. What is the sum of 2/3and 4/9? 

(a) 6/3
(b) 6/9 
(c) 10/9 
(d) 10/3

18. What should be subtracted from -2/3 to get -1? 

(a) 1/3 
(b) -1/3 
(c) 2/3 
(d) 2/3

19. What number should be subtracted from both the terms of the ratio 15:19 in order to make it 3:4? 

(a) 4 
(b) 3 
(c) 2 
(d) 6

20. Find the multiplicative inverse of 13. 

(a) 13 
(b) -13 
(c) -1/13 
(d) 1/13

21.  What is the product of 3/10 and 5/6? 

(a) 1/6 
(b) 1/3 
(c) 2/9 
(d) 1/4

22. The numbers used for counting objects are called :

(a) Natural numbers
(b) Whole numbers
(c) Integers
(d) None of these

23. The product of two rational numbers is always a _____.

(a) integer
(b) rational number
(c) natural number
(d) whole number

24. Find the sum 6/4 + (-11/4)?

(a) 4/5
(b) -5/4
(c) 6/3
(d) -2/3

25. Find 9/4 × (-8/3) =?

(a) -6/1
(b) -6/5
(c) 4/5
(d) 5/2

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Answer:

1. Answer: (c) 9

Explanation: \(\frac{3}{4}=\frac{3\times3}{4\times3}\)

= 9/12

2. Answer: (c) 15

Explanation: \(\frac{4}{5}=\frac{4\times3}{5\times3}\)

= 12/15

3. Answer: (b) -18

Explanation:\(\frac{-8}{-9}=\frac{-8\times2}{-9\times2}\)

= -16/-18

4. Answer: (a) −3/4

Explanation: \(\frac{-21}{28}=\frac{-21÷7}{28÷7 }\)

= -3/4

5. Answer: (a) 6/25

Explanation: \(\frac{-6}{-25}=\frac{-6\times-1}{-25\times-1}\)

= 6/25

6. Answer: (d) 7/-8

Explanation: \(\frac{7}{-4}=\frac{7\times2}{-4\times2}\)

\(\frac{14}{-8}\neq\frac{7}{-8}\)

7. Answer: (a) -5

Explanation: \(\frac{5}{4}+(\frac{-25}{4})\)

\(=\frac{5+(-25)}{4}\)

\(\frac{-20}{4}\)

= -5

8. Answer: (a) 1

Explanation: \(\frac{17}{11}-\frac{6}{11}\)

\(=\frac{17-6}{11}\)

\(=\frac{11}{11}\)

= 1.

9. Answer: (b) a whole number

Explanation: 0 is not a natural number. It is a whole number. Natural numbers only include positive integers.

10. Answer: (a) Commutative property 

Explanation: Commutative property says that the numbers can be added in any order, and you will still get the same answer. a+b = b+a is a clear example of the commutative property.

11. Answer: (a) associative property 

Explanation: a+(b+c) = (a+b)+c is associative property of whole numbers.

12. Answer: (a) 0 

Explanation: The additive identity property says that if you add a real number to zero or add zero to a real number, then you get the same real number back. The number zero is known as the identity element. Then zero(0) is the additive identity of a real number and all rational numbers are real. Hence, 0 is the additive identity of rational numbers.

13. Answer: (d) all of the above 

Explanation: We know that whole numbers are a subset of integers which in turn are a subset of rational numbers. Also, 1 is the multiplicative identity for rational numbers because the product of 1 and any rational number is the rational number itself. Thus, 1 is the multiplicative identity for whole numbers, integers, and rational numbers.

14. Answer: (a) -23 

Explanation: Additive inverse of 23 will be -23.

15. Answer: (a) 0 

Explanation:The rational number that does not have a reciprocal  0 because the reciprocal of 0 is undefined.

16. Answer: (c) Both positive and negative

Explanation:  An integer can be both positive and negative as well as zero. i.e. …-3, -2, -1, 0, 1, 2, 3,

17. Answer: (c) 10/9

Explanation: 2/3+ 4/9 

⇒ 2/3 x (3/3) + 4/9 

⇒ 6/9 + 4/9

⇒ 10/9

18. Answer: (a) 1/3 

Explanation: Let x be subtracted from -2/3. 

-2/3 – x = -1 

-x = -1 + 2/3 

-x = -1/3 

x = 1/3

19. Answer: (b) 3 

Explanation: Let the required number be x.  

\(\frac{15-x}{19-x}=\frac{3}{4}\)

60−4x = 57−3x

x = 3

20. Answer: (d) 1/13 

Explanation: The multiplicative inverse of 13 is (13)1 =  1/13

21. Answer: (d) 1/4

Explanation: The product of 3 /10 and 5/6:

 ⇒ 3/10 x 5/6 

⇒ (3 x 5)/(10 x 6) 

⇒ 15/60 

⇒ 1/4

22. Answer: (a) Natural numbers

Explanation: Counting objects are always positive and more than zero.

23. Answer: (b) rational number

Explanation: The product of two rational numbers is always a rational number. Let a and b are two rational numbers then a×b will be a rational number.

24. Answer: (b) -5/4

Explanation: 6+4 (-11/4)

= 6/4 + (-11)

= 6-11/4

= -5/4

25. Answer: (a) -6/1

Explanation: 9/4 × (-8)/3

= \(9\times\frac{-8}{4\times 3}\)

= -72/12

= \(\frac{12\times(-6)}{12\times1}\)

= -6/1

Click here for Practice MCQ Questions for Rational Numbers Class 7

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