NCERT Exemplar Solutions
Class 6 - Mathematics - Unit 1: Number System - Fill in the Blanks
Question 104

Question. 104

Length of river Narmada is about 1290 km. Its length in metres is ____.

Answer:

1,290,000 m

Detailed Answer with Explanation:

  1. We are given the length in kilometres: \(1290\) km.

  2. Recall the basic fact: \(1\,\text{km} = 1000\,\text{m}\).

  3. So to change kilometres to metres, we multiply by \(1000\).

  4. Write the multiplication: \(1290 \times 1000\).

  5. Multiplying by \(1000\) means adding three zeros to the number.

  6. Therefore: \(1290 \times 1000 = 1290000\).

  7. Add commas for reading: \(1,290,000\).

  8. Include the unit: \(1,290,000\,\text{m}\).

Open NCERT PDF