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Class-6-Mathematics- Knowing our Numbers (IMO)

 

1. What is the predecessor of 10,000?

  • a) 9,999
  • b) 10,001
  • c) 9,998
  • d) 10,002

2. What is the sum of the place values of 7 in the number 7,72,707?

  • a) 70,000
  • b) 7,07,707
  • c) 7,00,007
  • d) 7,07,000

3. The smallest 6-digit number is:

  • a) 99,999
  • b) 1,00,000
  • c) 1,00,001
  • d) 10,000

4. What is the difference between the place values of 8 in 8,48,128?

  • a) 7,92,000
  • b) 79,200
  • c) 7,20,000
  • d) 7,20,200

5. How many thousands are there in 1,20,000?

  • a) 1,200
  • b) 120
  • c) 12,000
  • d) 12

6. What is the place value of 5 in 5,48,217?

  • a) 5
  • b) 50
  • c) 50,000
  • d) 5,00,000

7. What is the largest 5-digit number?

  • a) 99,999
  • b) 10,000
  • c) 1,00,000
  • d) 9,999

8. Which number is the smallest?

  • a) 9,876
  • b) 12,345
  • c) 6,789
  • d) 10,000

9. The number 50,000 more than 3,76,789 is:

  • a) 4,26,789
  • b) 3,86,789
  • c) 3,96,789
  • d) 4,16,789

10. Which of the following numbers is divisible by 5?

  • a) 12,345
  • b) 1,23,456
  • c) 15,678
  • d) 1,234

11. The number 10,000 less than 50,876 is:

  • a) 40,876
  • b) 50,876
  • c) 60,876
  • d) 30,876

12. Which is greater: 15,267 or 12,876?

  • a) 15,267
  • b) 12,876
  • c) They are equal
  • d) Cannot be determined

13. What is the product of 1,000 and 100?

  • a) 1,00,000
  • b) 1,000
  • c) 10,000
  • d) 1,000,000

14. The expanded form of 5,40,231 is:

  • a) 5,00,000 + 40,000 + 200 + 30 + 1
  • b) 5,00,000 + 4,00,000 + 200 + 30 + 1
  • c) 5,00,000 + 4,000 + 200 + 30 + 1
  • d) 50,000 + 4,00,000 + 231

15. Which is the smallest 7-digit number?

  • a) 10,00,000
  • b) 9,99,999
  • c) 1,00,000
  • d) 10,000

16. Round off 8,345 to the nearest thousand:

  • a) 8,000
  • b) 8,400
  • c) 8,300
  • d) 9,000

17. How many digits are there in the largest 6-digit number?

  • a) 5
  • b) 6
  • c) 7
  • d) 4

18. Which number is smaller? 3,45,678 or 3,45,987?

  • a) 3,45,678
  • b) 3,45,987
  • c) They are equal
  • d) Cannot be determined

19. If 1 lakh is subtracted from 10 lakhs, the result is:

  • a) 1 lakh
  • b) 9 lakhs
  • c) 99 lakhs
  • d) 10 lakhs

20. The place value of 9 in the number 9,05,621 is:

  • a) 9
  • b) 90,000
  • c) 9,00,000
  • d) 9,000

21. What is the number for fifty lakh twenty-five thousand?

  • a) 50,25,000
  • b) 50,20,500
  • c) 5,025,000
  • d) 5,020,500

22. The difference between the largest 4-digit number and the smallest 4-digit number is:

  • a) 8,999
  • b) 9,000
  • c) 9,999
  • d) 10,000

23. What is 1 crore minus 1?

  • a) 99,99,999
  • b) 1,00,000
  • c) 9,99,999
  • d) 10,00,000

24. What is 5 times 1,00,000?

  • a) 5,00,000
  • b) 50,000
  • c) 500,000
  • d) 50,000,000

25. Which is larger: 2,34,567 or 2,34,456?

  • a) 2,34,567
  • b) 2,34,456
  • c) They are equal
  • d) Cannot be determined

26. Round off 45,678 to the nearest ten thousand:

  • a) 50,000
  • b) 45,000
  • c) 46,000
  • d) 40,000

27. What is the sum of the digits of the number 4567?

  • a) 22
  • b) 21
  • c) 23
  • d) 24

28. What is the product of the place values of 7 in the number 7,07,007?

  • a) 7,000
  • b) 49
  • c) 7,00,000
  • d) 49,00,000

29. Which number is between 3,45,678 and 3,45,680?

  • a) 3,45,677
  • b) 3,45,679
  • c) 3,45,676
  • d) 3,45,681

30. Which digit in the number 6,47,389 has the highest place value?

  • a) 6
  • b) 4
  • c) 7
  • d) 9

31. Which of the following numbers is the smallest?

  • a) 78,234
  • b) 87,234
  • c) 76,234
  • d) 67,234

32. What is the place value of 2 in 8,20,560?

  • a) 20,000
  • b) 2,00,000
  • c) 200
  • d) 2,000

33. The smallest 8-digit number is:

  • a) 1,00,00,000
  • b) 99,99,999
  • c) 10,00,000
  • d) 1,00,000

34. How many lakhs are there in 50,00,000?

  • a) 500
  • b) 50
  • c) 5,00,000
  • d) 5

35. The number 10,00,000 more than 8,99,999 is:

  • a) 18,99,999
  • b) 9,99,999
  • c) 19,99,999
  • d) 10,99,999

36. What is the sum of the place values of 2 in 2,23,320?

  • a) 2,02,000
  • b) 20,200
  • c) 2,02,200
  • d) 20,220

37. What is the difference between 10 lakhs and 1 lakh?

  • a) 9 lakhs
  • b) 99,999
  • c) 1 lakh
  • d) 10 lakhs

38. The expanded form of 60,504 is:

  • a) 60,000 + 500 + 4
  • b) 60,000 + 50 + 4
  • c) 60,000 + 500 + 40
  • d) 60 + 500 + 4

39. Which is the greatest number?

  • a) 5,00,123
  • b) 4,99,999
  • c) 5,01,000
  • d) 5,00,001

40. Round off 89,745 to the nearest hundred:

  • a) 89,700
  • b) 89,800
  • c) 89,750
  • d) 89,900

Answer Key

  1. a) 9,999
  2. d) 7,07,000
  3. b) 1,00,000
  4. a) 7,92,000
  5. b) 120
  6. d) 5,00,000
  7. a) 99,999
  8. c) 6,789
  9. b) 3,86,789
  10. a) 12,345
  11. a) 40,876
  12. a) 15,267
  13. a) 1,00,000
  14. a) 5,00,000 + 40,000 + 200 + 30 + 1
  15. a) 10,00,000
  16. d) 9,000
  17. b) 6
  18. a) 3,45,678
  19. b) 9 lakhs
  20. c) 9,00,000
  21. a) 50,25,000
  22. a) 8,999
  23. a) 99,99,999
  24. a) 5,00,000
  25. a) 2,34,567
  26. a) 50,000
  27. a) 22
  28. d) 49,00,000
  29. b) 3,45,679
  30. a) 6
  31. d) 67,234
  32. b) 2,00,000
  33. a) 1,00,00,000
  34. b) 50
  35. a) 18,99,999
  36. c) 2,02,200
  37. a) 9 lakhs
  38. b) 60,000 + 50 + 4
  39. c) 5,01,000
  40. b) 89,800