Exercise 1.4
1. Write the numbers using commas according to International system of numeration.
(i) 97645315 (ii) 20048421
(iii) 476356 (iv) 9490026834
To write the numbers using commas according to the International system of numeration, we place commas after every
(i) 97645315 =
(ii) 20048421 =
(iii) 476356 =
(iv) 9490026834 =
2. Collect the mobile numbers of your friends and other family members. Write them using commas and read them in International system.
(1) 9876543210 =
98,76,54,3210 =
(2) 9123456789 =
91,23,45,6789 =
(3) 8302456712 =
83,02,45,6712 =
(4) 7610234895 =
76,10,23,4895 =
(5) 9354126780 =
93,54,12,6780 = Nine billion,
(6) 8045671293 =
80,45,67,1293 =
(7) 7609821345 =
76,09,82,1345 =
(8) 9476123085 =
94,76,12,3085 =
(9) 8432156709 =
84,32,15,6709 =
(10) 7523109468 =
75,23,10,9468 =
3. Write the numbers in words in both Indian and International system:
(i) 123115027 (ii) 89643092
(i) 123115027 =
Indian System:
International system:
(ii) 89643092 =
Indian System:
International system:
4. Read the number carefully and answer the following:
302,179,468
(i) The digit at millions place
(ii) The digit at hundreds place
(iii) The digit in ten millions place
(iv) How many millions are there in the number?
The number can be broken down as:
(i) The digit at millions place:
(ii) The digit at hundreds place:
(iii) The digit in ten millions place:
(iv) Millions in the number:
We have found all the answers.