Number System worksheet-2

1. 10 million =_____ crore.

2. 1 million =_____ thousand.

3. The expanded form of 200562 is_____.

4. The expanded form of 76950 is _____

5. The numeral form of “Twenty million, five hundred two thousand and six undred thirty two “is _______.

6. The numeral form of “Twenty lakh, four thousand four “is ______.

7. 8,095,262 is written in the ______ number system

8. 80, 95,262 is written in the _____ number system.

9. 845625 can be round off to nearest ten thousand as ______.

10. The actual and the estimate of the sum by rounding off 21470 +12437+230 to nearest ten ______ and _____.

11. The actual and the estimate of the difference by rounding off 9525 –3542 to nearest hundreds is _____ and _______.

12. Using 2, 3 9 and 6, ______ is the greatest four digit number

13. Using 2, 3 9 and 6, ______ is the smallest four digit number

14. Using 2, 3 9 and 6, ______ is the greatest five digit number.

15. Using 2, 3 9 and 6, ______ is the smallest six digit number.

16. The estimate of product to nearest tens of 87 x 24 ,

17. The estimate quotient of 635/38 (first estimate then divide)

18. 5,00,000+40,000+300+90+5=_____

19. Forty seven multiplied by the sum of nine and eighteen can be written as:________

20. Roman number are formed using _____ symbols in different combinations and rules

Answer Key

1. 1

2. 1000

3. (2×100000)+(5×100)+(6×10)+(2×1)

4. (7×10000)+(6×1000)+(9×100)+(5×10)

5. 20,502,642

6. 20,04,004

7. International

8. Indian

9. 850000

10. 34137 and 34140

11. 5983 and 6000

12. 9632

13. 2369

14. 99632

15. 222369

16. 2090

17. 16

18. 540395

19. 47×(9+18)

20. 7