NCERT Solutions for Class 8 Maths Maths - NCERT Solution Chapter 1

Rational Numbers Class 8

Chapter 1 Rational Numbers Exercise 1.1, 1.2 Solutions

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Exercise 1.1 : Solutions of Questions on Page Number : 14

Q1 :  

Using appropriate properties find:

(i)

(ii)


Answer :

(i)

(ii)

(By commutativity)

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Q2 :  

Write the additive inverse of each of the following:

(i) (ii) (iii) (iv) (v)


Answer :

(i)

Additive inverse =

(ii)

Additive inverse =

(iii)

Additive inverse =

(iv)

Additive inverse

(v)

Additive inverse

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Q3 :  

Verify that - ( - x) = x for.

(i) (ii)


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Q4 :  

Find the multiplicative inverse of the following.

(i) (ii) (iii)

(iv) (v) (vi) - 1


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Q5 :  

Name the property under multiplication used in each of the following:

(i)

(ii)

(iii)


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Q6 :  

Multiply by the reciprocal of.


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Q7 :  

Tell what property allows you to compute.


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Q8 :  

Is the multiplicative inverse of? Why or why not?


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Q9 :  

Is 0.3 the multiplicative inverse of? Why or why not?


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Q10 :  

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.


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Q11 :  

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, where is __________.

(v) The product of two rational numbers is always a __________.

(vi) The reciprocal of a positive rational number is __________.


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Exercise 1.2 : Solutions of Questions on Page Number : 20

Q1 :  

Represent these numbers on the number line.

(i) (ii)


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Q2 :  

Represent on the number line.


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Q3 :  

Write five rational numbers which are smaller than 2.


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Q4 :  

Find ten rational numbers between and.


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Q5 :  

Find five rational numbers between

(i)

(ii)

(iii)


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Q6 :  

Write five rational numbers greater than - 2.


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Q7 :  

Find ten rational numbers between and.


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Next Chapter 2 : Linear Equations in One Variable >>

Maths - NCERT Solution - Maths : CBSE NCERT Exercise Solutions for Class 8th for Rational Numbers ( Exercise 1.1, 1.2 ) will be available online in PDF book form soon. The solutions are absolutely Free. Soon you will be able to download the solutions.