Question

5. Find the difference between the place values of the two nines in 79520986,
6. Find the difference between the place value and the face value of 7 in 27650934.
7. How many 6-digit numbers are there in all?
8. How many 7-digit numbers are there in all?
9. How many thousands make a lakh?
10. How many thousands make a crore?
11. Find the difference between the number 738 and that obtained on reversing its digits.
12. What comes just after 9547999?
13. What comes just before 9900000?
14. What comes just before 10000000?
15. Write all 3-digit numbers using 2, 3, 4, taking each digit only once.
16. Write the smallest number of different digits formed by using the digits 3, 1, 0, 5 and 7.
17. Write the largest number of different digits formed by using the digits 2, 4, 0, 3, 6 and 9.
18. Rewrite each of the following numerals with proper commas, using the international place-
value chart. Also, write the number name of each in the international system.
0 735821
(11) 6057894
(111) 56943821
(iv) 37502093
(v) 89350064
(vi) 90703006
19. Write each of the following in figures in the international place-value chart:
(1) Thirty million one hundred five thousand sixty-three
(11) Fifty-two million two hundred five thousand six
(11) Flve million five thousand five​

Answer 1

Explanation:

5. place value of both 9 are 9000000 and 900

difference= 9000000-900 = 8999100

6.place value of 7 =7000000

face value of 7 = 7

difference = 7000000-7 = 6999993

7. 999999-100000+1 = 899999+1 = 900000

8. 9999999-1000000+1= 8999999+1= 9000000

9. 1 lakh= 1,00,000

1 thousand = 1,000

so 2 zeroes more will make 1000 a 1 lakh..

so 100 thousands make 1 lakh

10.1 crore= 1,00,00,00,000

1 thousand= 1,000

here 6 more zeroes will make 1000 a 1 crore

so 10,00,000 thousands will make 1 crore or 10 lakh thousand will make 1 crore.

Answer 2

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