1.

The height (in metres) of the mountains in Tamil Nadu as follows:MountainsTHHTODoddabetta2637Mahendragiri1647Anaimudi2695Velliangiri1778(i) Which is the highest mountain listed above? (ii) Order the mountains from the highest to lowest. (iii) What is the difference between the heights of the mountains Anaimudi and Mahendragiri?

Answer»

Arranging the numbers in place value chart.

SI. No.MountainsHeight (in metres)
1Doddabetta2637
2Mahendragiri1647
3Anaimudi2695
4Velliangiri1778

(i) The highest mountain is Anaimudi [Comparing left-most digits] 

(ii) From the above chart 

In thousands place, Doddabetta and Anaimudi have greater value 2.

Comparing digits of 2637 and 2695 

2 = 2, 6 = 6, 3 < 9. 

2637 < 2695 

Again comparing the digits of 1647 and 1778 

1 = 1, 6 < 7 

1647 < 1778. 

The required order is 2695 > 2637 > 1778 > 1647. 

Anaimudi > Doddabetta > Veliangiri > Mahendragiri

(iii) The height of Anaimudi mountain = 2695 m 

The height of Mahendragiri mountain = 1647 m 

The Difference = 1048 m



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