# NCERT Class 9 Solutions: Number Systems (Chapter 1) Exercise 1.4 (For CBSE, ICSE, IAS, NET, NRA 2022)

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

Solution:

• Step 1 – Consider a number line.
• Step 2 – Visualize line between number 3 and 4
• Step 3 – Magnify space between numbers 3 and 4 into 10 equal parts.
• Step 4 – Visualize between number 3.7 and 3.8 minutely using a magnifying glass.
• Step 5 – Magnify and divide space between numbers 3.7 and 3.8 into 10 equal parts.
• Step 6 – Visualize between number 3.76 and 3.77 minutely using a magnifying glass.
• Step 7 – Magnify and divide space between numbers 3.76 and 3.77 into 10 equal parts.
• Step 6 – Visualize the number 3.765 using a magnifying glass.

Q. 2 Visualize on the number line, up to 4 decimal places

Solution:

Since we have to go up to 4 decimal places we will consider the number 4.2626 and visualize it on number line

• Step 1 – Consider a number line.
• Step 2 – Take space between number 4 and 5.
• Step 3 – Divide the space between numbers 4 and 5 into 10 equal parts.
• Step 4 – Consider the space between numbers 4.2 and 4.3 using a magnifying glass.