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Page No 182:

Question 1:

List five rational numbers between:

(i) − 1 and 0 (ii) − 2 and − 1

(iii) (iv)

Answer:

(i) −1 and 0

(ii) −2 and −1

Five rational numbers are

(iii)

Five rational numbers are

(iv)

Five rational numbers are

Page No 182:

Question 2:

Write four more rational numbers in each of the following patterns:

(i) (ii)

(iii) (iv)

Answer:

(i)

It can be observed that the numerator is a multiple of 3 while the denominator is a multiple of 5 and as we increase them further, these multiples are increasing. Therefore, the next four rational numbers in this pattern are


(ii)

The next four rational numbers in this pattern are

(iii)

The next four rational numbers in this pattern are

(iv)

The next four rational numbers in this pattern are

Video Solution for Rational Numbers (Page: 182 , Q.No.: 2)

NCERT Solution for Class 7 math - Rational Numbers 182 , Question 2



Page No 183:

Question 3:

Give four rational numbers equivalent to:

(i) (ii) (iii)

Answer:

(i)

Four rational numbers are

(ii)

Four rational numbers are

(iii)

Four rational numbers are

Page No 183:

Question 4:

Draw the number line and represent the following rational numbers on it:

(i) (ii)

(iii) (iv)

Answer:

(i)

This fraction represents 3 parts out of 4 equal parts. Therefore, each space between two integers on number line must be divided into 4 equal parts.

can be represented as

(ii)

This fraction represents 5 parts out of 8 equal parts. Negative sign represents that it is on the negative side of number line. Therefore, each space between two integers on number line must be divided into 8 equal parts.

can be represented as

(iii)

This fraction represents 1 full part and 3 parts out of 4 equal parts. Negative sign represents that it is on the negative side of number line. Therefore, each space between two integers on number line must be divided into 4 equal parts.

can be represented as


(iv)

This fraction represents 7 parts out of 8 equal parts. Therefore, each space between two integers on number line must be divided into 8 equal parts.

can be represented as

Video Solution for Rational Numbers (Page: 183 , Q.No.: 4)

NCERT Solution for Class 7 math - Rational Numbers 183 , Question 4

Page No 183:

Question 5:

The points P, Q, R, S, T, U, A and B on the number line are such that,

TR = RS = SU and AP = PQ = QB. Name the rational numbers represented by P, Q, R and S.

Answer:

Distance between U and T = 1 unit

It is divided into 3 equal parts.

TR = RS = SU =

R =

S =

Similarly,

AB = 1 unit

It is divided into 3 equal parts.

P =

Q =

Video Solution for Rational Numbers (Page: 183 , Q.No.: 5)

NCERT Solution for Class 7 math - Rational Numbers 183 , Question 5

Page No 183:

Question 6:

Which of the following pairs represent the same rational number?

(i) (ii) (iii)

(iv) (v) (vi)

(vii)

Answer:

(i)

As, therefore, it does not represent same rational numbers.

(ii)

Therefore, it represents same rational numbers.

(iii)

Therefore, it represents same rational numbers.

(iv)

Therefore, it represents same rational numbers.

(v)

Therefore, it represents same rational numbers.

(vi)

As, therefore, it does not represent same rational numbers.

(vii)

Page No 183:

Question 7:

Rewrite the following rational numbers in the simplest form:

(i) (ii)

(iii) (iv)

Answer:

(i)

(ii)

(iii)

(iv)

Page No 183:

Question 8:

Fill in the boxes with the correct symbol out of >, <, and =

(i) (ii) (iii)

(iv) (v) (vi)

(vii)

Answer:

(i)

As −15 < 14,

Therefore,

(ii)

As −28 < −25

Therefore,

(iii) Here,

Therefore,

(iv)

As −32 > −35,

Therefore,

(v)

As −4 < −3,

Therefore,

(vi)

(vii)



Page No 184:

Question 9:

Which is greater in each of the following?

(i) (ii) (iii)

(iv) (v)

Answer:

(i)

By converting these into like fractions,

As 15 > 4, therefore, is greater.

(ii)

(iii)

By converting these into like fractions,

(iv)

(v)

By converting these into like fractions,

Page No 184:

Question 10:

Write the following rational numbers in ascending order:

(i) (ii) (iii)

Answer:

(i)

As −3 < −2 < −1,

(ii)

By converting these into like fractions,

As −12 < −3 < −2,

(iii)

By converting these into like fractions,

As −42 < −21 < −12,


Video Solution for Rational Numbers (Page: 184 , Q.No.: 10)

NCERT Solution for Class 7 math - Rational Numbers 184 , Question 10



Page No 190:

Question 1:

Find the sum:

(i) (ii) (iii)

(iv) (v) (vi)

(vii)

Answer:

(i)45+-11  4 = 45-11  4 = 16-5520 = -39   20
​​

(ii)

L.C.M of 3 and 5 is 15.

(iii)

L.C.M of 10 and 15 is 30.

(iv)

L.C.M of 11 and 9 is 99.

(v)

L.C.M of 19 and 57 is 57.

(vi)

(vii) =

L.C.M of 3 and 5 is 15.

Video Solution for Rational Numbers (Page: 190 , Q.No.: 1)

NCERT Solution for Class 7 math - Rational Numbers 190 , Question 1

Page No 190:

Question 2:

Find

(i) (ii) (iii)

(iv) (v)

Answer:

(i)

L.C.M of 24 and 36 is 72.

(ii)

L.C.M of 63 and 7 is 63.

(iii)

L.C.M of 13 and 15 is 195.

(iv)

L.C.M of 8 and 11 is 88.

(v)

L.C.M of 9 and 1 is 9.

Page No 190:

Question 3:

Find the product:

(i) (ii) (iii)

(iv) (v) (vi)

Answer:

(i)

(ii)

(iii)

(iv)

(v)

(vi)

Page No 190:

Question 4:

Find the value of:

(i) (ii) (iii)

(iv) (v) (vi)

(vii)

Answer:

(i)

(ii)

(iii)

(iv)

(v)

(vi)

(vii)
​​​

Video Solution for Rational Numbers (Page: 190 , Q.No.: 4)

NCERT Solution for Class 7 math - Rational Numbers 190 , Question 4



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