NCERT Solutions Class 9 Mathematics Number System Exercise 1.4

Class 9 - Mathematics
Number System - Exercise 1.4

Exercise 1.4

Question : 1:Visualize 3.765 on the number line, using successive magnification.

Answer :

First of all, we observe that 3.765 lies between 3 and 4. Divide this portion in 10 equal parts.
In the next step, we locate 3.765 between 3.7 and 3.8
To get more accurate visualization of representation, we divide this portion of number line

into 10 equal parts and use a magnifying glass to visualize that 3.675 lies between 3.76 and

3.77.

Now to visualize 3.765 still more accurately, we divide the portion between 3.76 and and

3.77 into 10 equal parts and locate 3.765.

Question : 2:Visualize 4.26 on the number line up to 4 decimal places.

Answer :

First of all, we observe that 4.2626(4.26) lies between 4 and 5. Divide this portion into 10

equal parts.

In the next step, we locate 4.2626 between 4.2 and 4.3
To get more accurate visualization of representation, we divide this portion of number line

into 10 equal parts and use a magnifying glass to visualize that 4.2626 lies between 4.262 and

4.263.

Now to visualize 4.2626 still more accurately, we divide the portion between 4.262 and

4.263 into 10 equal parts and locate 4.2626.