NCERT Solutions for Class 8 Math Chapter 1 - Rational Numbers

Question 1:

Fill in the blanks in the following table:

Question 2:

Complete the following table:

Question 3:

Complete the following table:

Question 4:

Find using distributivity

Question 5:

Find using distributivity

Question 6:

Using appropriate properties find:

Question 7:

Using appropriate properties find:

Question 8:

Write the additive inverse of the following:

Question 9:

Write the additive inverse of the following:

Question 10:

Write the additive inverse of the following:

Question 11:

Write the additive inverse of the following:

Question 12:

Write the additive inverse of the following:

Question 13:

Verify that: −(−x) = x for:

Question 14:

Verify that: −(−x) = x for:

Question 15:

Find the multiplicative inverse of the following:
–13

Question 16:

Find the multiplicative inverse of the following:

Question 17:

Find the multiplicative inverse of the following:

Question 18:

Find the multiplicative inverse of the following:

Question 19:

Find the multiplicative inverse of the following:

Question 20:

Find the multiplicative inverse of the following:
–1

Question 21:

Name the property under multiplication used of the following:

Question 22:

Name the property under multiplication used of the following:

Question 23:

Name the property under multiplication used of the following:

Question 24:

Question 25:

Tell what property allows you to compute:

Question 26:

Question 27:

Question 28:

Write:
(i) The rational number that does not have a reciprocal.
(ii) The rational numbers that are equal to their reciprocals.
(iii) The rational numbers that is equal to their negative.

Question 29:

Zero has _______________reciprocal.

Question 30:

The numbers ______________ and ____________ are their own reciprocals.

Question 31:

The reciprocal of –5 is ___________ .

Question 32:

Reciprocal of

, where x $\ne$ 0 is _____________.

Question 33:

The product of two rational numbers is always a _____________.

Question 34:

The reciprocal of a positive rational number is __________.

Question 35:

Represent these numbers on the number line:

Question 36:

Question 37:

Write five rational numbers which are smaller than 2.

Question 38:

Question 39:

Find five rational numbers between

Question 40:

Write five rational numbers greater than −2.

Question 41:

Question 42:

Write the rational number for each point labelled with a letter.

Question 43:

Write the rational number for each point labelled with a letter.