1.

Read the table and answer the following questions.Name of the StarDiameter (in miles)Sun864730Sirius1556500Canopus25941900Alpha Centauri1037700Arcturus19888800Vega2594200(i) Write the Canopus star’s diameter in words in the Indian and the International System. (ii) Write the sum of the place values of 5 in Sirius star’s diameter in Indian System. (iii) Eight hundred sixty-four million seven hundred thirty. Write in Indian System (iv) Write the diameter in words of Arcturus star in the International System.(v) Write the difference of the diameters of Canopus and Arcturus star in the Indian and the International Systems.

Answer»

(i) Canopus star’s diameter is 25941900 miles 

Indian System: Two crores Fifty-Nine Lakh Fortyone thousand Nine Hundred 

International System: Twenty-Five Million Nine Hundred Forty-One Thousand Nine Hundred.

(ii) Sirus star’s diameter = 1556500 miles 

Sum of place values of 5 is 5 x 100000 + 5 x 10000 + 5 x 100 

= 500000 + 50000 + 500 

= 5,50,500

(iii) Given value is 864,000,730 

In Indian System 86,40,00,730 

Eighty-six crore forty lakhs seven hundred and thirty.

(iv) The diameter of the Arcturus Star is 19,888,800 miles 

Nineteen Million Eight Hundred and Eighty-Eight Thousand Eight Hundred.

(v) The diameter of Canopus = 25941900 

Diameter of Arcturus = 19888800 

Difference = 6053100 

In Indian System 60,53,100 

Sixty lakh fifty-three thousand one hundred. 

In International System 6,053,100 

Six Million fifty-three thousand one hundred.



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