DAV Class 7 Maths Chapter 1 Solutions | Rational Number Question Answers

DAV Class 7 Maths Chapter 1 Solutions | Rational Number Question Answers

Are you looking for DAV Books Solutions then you are in right place , we have discussed solution of Class 7 Maths book which is followed in all DAV School. Solutions are given below with proper Explanation please bookmark our website for further update !! All the Best !!

Rational Number Questions & Answers

Worksheet 1

DAV Class 7 Maths Chapter 1 Solutions | Rational Number Question Answers

Solution:

A number is a rational number if it can be expressed in P/Q format where Q is not equal to zero.

(i) – 3 is a rational number.
(ii) – 2/3 is a rational number.
(iii) 4/0 is not a rational number as its denominator is zero. It violates the basic definition as the denominator is zero.
(iv) 0/–5 is a rational number.

DAV Class 7 Maths Chapter 1 Solutions | Rational Number Question Answers

Answer: (i) Numerator = (– 5) × 4 = – 20
Denominator = – 5 + 4 = – 1
Rational Number = -20/-1 or 20/1

(ii) Numerator = 64 ÷ 4 = 16
Denominator = 32 – 18 = 14
Rational Number = 16/14 =8/7

DAV Class 7 Maths Chapter 1 Solutions | Rational Number Question Answers

Answer: (i) -2/9 is not a positive rational number. (ii) 3/-5 is not a positive rational number.
(iii) 4/9 is the positive rational number. (iv) –3/-19 =3/19 is the positive rational number.
(v) 0/– 3 is not a positive rational number.

DAV Class 7 Maths Chapter 1 Solutions | Rational Number Question Answers

Answer :(i) 0 is the integer which is neither positive nor negative.
(ii) No. 0 is a rational number where P/Q =0/1 while Q/P =1/0 is not a rational number. A number is a rational number if it can be expressed in Numerator/Denominator format where the Denominator is not equal to zero.

DAV Class 7 Maths Chapter 1 Solutions | Rational Number Question Answers

Answer:(i) False; because 0 is the whole number but it is not a natural number.
(ii) True, as the system of integers include all positive zero and all negative numbers.
(iii) False; as whole numbers are positive whereas integers are negative and positive both. e.g. – 3 is not a whole number.
(iv) True
(v) False: Fractions are never negative whereas rational numbers may be negative. e.g.– 7/3 is not a fraction but it is a rational number.
(vi) False, fraction cannot be negative whereas rational numbers may be negative. e.g. -7/3 is a rational number but 3/-7 is not a fraction.

WORKSHEET–2

DAV Class 7 Maths Chapter 1 Solutions | Rational Number Question Answers

DAV Class 7 Maths Chapter 1 Solutions | Rational Number Question Answers
DAV Class 7 Maths Chapter 1 Solutions | Rational Number Question Answers
DAV Class 7 Maths Chapter 1 Solutions | Rational Number Question Answers
DAV Class 7 Maths Chapter 1 Solutions | Rational Number Question Answers
DAV Class 7 Maths Chapter 1 Solutions | Rational Number Question Answers

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