Class 7 Mathematics

Chapter 9: Rational Numbers

NCERT Textbook Questions & Answers

Question 1

Write five rational numbers.

Answer:

Step 1: A rational number is of the form p/q, where q ≠ 0.

Step 2: Write examples.

Examples of five rational numbers are:

• 1/2
• -3/5
• 4/7
• 0/9
• 6/1

✅ Final Answer: 1/2, -3/5, 4/7, 0/9, 6/1

Question 2

Is 0 a rational number? Give reason.

Answer:

Step 1: Write 0 in fraction form.

0 = 0/1

Step 2: Here, numerator is an integer and denominator is not zero.

✅ Final Answer: Yes, 0 is a rational number because it can be written as 0/1.

Question 3

Find five rational numbers between 1 and 2.

Answer:

Step 1: Write 1 and 2 with same denominator.

1 = 10/10,   2 = 20/10

Step 2: Write fractions between them.

• 11/10
• 12/10
• 13/10
• 14/10
• 15/10

✅ Final Answer: 11/10, 12/10, 13/10, 14/10, 15/10

Question 4

Write the rational number representing each of the following:

(a) 3
(b) -7

Answer:

(a)

Step 1: Any integer can be written as p/1.
3 = 3/1

(b)

-7 = -7/1

✅ Final Answer: (a) 3/1    (b) -7/1

Question 5

Are all integers rational numbers? Explain.

Answer:

Step 1: Recall the definition of rational numbers.

A rational number is of the form p/q, where q ≠ 0.

Step 2: Write an integer in rational form.

Example: 5 = 5/1,   -3 = -3/1

So, every integer can be written as a rational number.

✅ Final Answer: Yes, all integers are rational numbers.

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Class 7 Mathematics – Chapter 9
NCERT Textbook Questions & Answers

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