NCERT Solutions for Class 8 Maths Chapter 1 Rational Numbers Ex 1.1
NCERT Solutions for Class 8 Maths Chapter 1 Rational Numbers Ex 1.1
These NCERT Solutions for Class 8 Maths Chapter 1 Rational Numbers Ex 1.1 Questions and Answers are prepared by our highly skilled subject experts.
NCERT Solutions for Class 8 Maths Chapter 1 Rational Numbers Exercise 1.1
Question 1.
Using appropriate properties, find:
Solution:
Question 2.
Write the additive inverse of each of the following:
Question 3.
Verify that -(-x) = x for:
Question 4.
Find the multiplicative inverse of the following:
(vi) Multiplicative inverse of -1 is -1.
Question 5.
Question 6.
Question 7.
Question 8.
Question 9.
Question 10.
Write:
(i) The rational number that does not have a reciprocal.
(ii) The rational numbers that are equal to their reciprocals.
(iii) The rational number that is equal to its negative.
Solution:
(i) The rational number ‘0’ does not have a reciprocal.
(ii) The rational numbers 1 and (-1) are equal to their reciprocal.
(iii) The rational number ‘0’ is equal to its negative [(0) + (0) = 0]
∴ The negative of 0 is 0.
Question 11.
Fill in the blanks:
(i) Zero has ________ reciprocal.
(ii) The numbers ________ and ________ are their own reciprocals.
(iii) The reciprocal of -5 is ________
(iv) Reciprocal of 1/x when x ≠ 0 is ________
(v) The product of two rational numbers is always a ________
(vi) The reciprocal of a positive rational number is ________
Solution:
(i) no
(ii) 1 and -1
(iii) −1/5
(iv) x
(v) rational number
(vi) positive
The Complete Educational Website