Knowing Our Numbers Worksheet

Objective Type Questions

Fill in the blanks.

1. 1 crore =    thousands
   
   
2. 35000 = 3 ×    + 5 × 
   
   
3. The greatest 4-digit number formed using digits 7, 4, 0, 6 is                                .
   
   
4. 1 billion =   crore
   
   
5. Match the column.
   
   
   
6. Write proper digits in empty boxes.
   
   
   Multiple Choice Questions
   
   
7. 1,00,00,000 – 1 =
   (a) Greatest 8-digit number
   (b) Smallest 8-digit number
   (c) Greatest 7-digit number
   (d) Smallest 7-digit number
   
   
8. The expansion of number 45,21,124 is
   (a) 4 × 1,00,00,000 + 5 × 1,00,000 + 2 × 10,000 + 1 × 1,000 + 1 × 100 + 2 × 10 + 4
   (b) 4 × 1,00,000 + 5 × 10,000 + 2 × 1000 + 1 × 100 + 1 × 10 + 2 × 1 + 4
   (c) 4 × 10,00,000 + 5 × 1,00,000 + 2 × 10,000 + 1 × 1,000 + 1 × 100 + 2 × 10 + 4
   (d) 4 × 10,000 + 5 × 1,00,000 + 2 × 10,000 + 1 × 1,000 + 1 × 100 + 2 × 10 + 4
   
   
9. Swati uses 9 litres of water daily. Expressing the quantity of water in millilitres give
   (a) 90 millilitres
   (b) 900 millilitres
   (c) 9000 millilitres
   (d) 90000 millilitres
   
   
10. The number name of greatest 4-digit number + 1 is
    (a) One thousand
    (b) Ten thousand
    (c) One lakh
    (d) Ten lakhs
    
    
11. There are 10 lakh trees in a town. The number of trees in 10 such towns is
    (a) 10 millions
    (b) 1 million
    (c) 10 crore
    (d) 1 crore
    
    
12. Which of the following is CORRECT statement?
    (a) Successor of a 2-digit number is always a 2-digit number.
    (b) Predecessor of a 4-digit number is always a 3-digit number.
    (c) The place value of 7 in 6117200 is 7000.
    (d) 3333 = 3 × 10,000 + 3 × 1,000 + 3 × 100 + 3 × 10
    
    
13. In a smallest 7-digit number, there are __________ ten thousands
    (a) 10
    (b) 100
    (c) 1000
    (d) 0
    
    Subjective Questions
    
    
14. Find the difference between the smallest 9-digit number and the greatest 8-digit number.
    
    
15. Smriti everyday follows the below route from Stop 1 to Sop 4 to go to her office and come back. Find the total distance travelled by her in a day.
    
    
    
16. The savings in a bank account of Mr. Shastri was Rs. 1,24,11,900. He withdrew Rs. 5,00,000 for renovation work of his house. After completing the work, he again withdrew Rs. 1,50,000 for purchasing decorative items for his house. How much amount is left in his account?
    
    
17. What can be the sum of the place value of 7 in the number 2776700?
    
    
18. Guess the number!
    
    
    
19. Arrange the below Laptops in ascending order of their prices.
    
    
    
20. A packet contains 60 toffees and there are 27 such packets. These toffees are needed to be equally distributed among 108 children. Find the share of each child.
    
    
    
21. A landline number consists of eight digits. The first four digits are 8, 8, 6 and 7. Make the greatest and the smallest landline number by using the digits 3, 0, 9 and 1 only once. 
    
    
22. A car covers 23 km in 1 hour. How much distance will it cover in 6 hours. Express your answer in metres.
    
    
23. Cultural event of a college is organised in a stadium. 6714 chairs are to be arranged in rows of 70. How many rows will be there? Will there be any chairs left over?

Objective Type Questions

Fill in the blanks.

1. 1 crore =    thousands
   Solution:
   1 crore = 10,000 thousands
   
   
2. 35000 = 3 ×    + 5 × 
   Solution:
   Expanded form of 35000 = 3 ×10000 + 5 × 1000 
   
   
3. The greatest 4-digit number formed using digits 7, 4, 0, 6 is 
   Solution:
    Greatest 4-digit number using digits 7, 4, 0, 6 = 7640
                               .
4. 1 billion =   crore
   Solution:
   1 billion = 100 crore
   
   
5. Match the column.
   
   Solution:
   (a) – (iii)
   (b) – (i)
   (c) – (iv)
   (d) – (ii)
   
   
6. Write proper digits in empty boxes.
   
   Solution:
   Digit at hundreds place = 9
   Digit at millions place = 6
   Millions in the number = 506
   
   Multiple Choice Questions
   
   
7. 1,00,00,000 – 1 =
   (a) Greatest 8-digit number
   (b) Smallest 8-digit number
   (c) Greatest 7-digit number
   (d) Smallest 7-digit number
   Correct option: (c) Greatest 7-digit number
   Solution:
   1,00,00,000 – 1 = 99,99,999, which is the greatest 7-digit number.
   
   
8. The expansion of number 45,21,124 is
   (a) 4 × 1,00,00,000 + 5 × 1,00,000 + 2 × 10,000 + 1 × 1,000 + 1 × 100 + 2 × 10 + 4
   (b) 4 × 1,00,000 + 5 × 10,000 + 2 × 1000 + 1 × 100 + 1 × 10 + 2 × 1 + 4
   (c) 4 × 10,00,000 + 5 × 1,00,000 + 2 × 10,000 + 1 × 1,000 + 1 × 100 + 2 × 10 + 4
   (d) 4 × 10,000 + 5 × 1,00,000 + 2 × 10,000 + 1 × 1,000 + 1 × 100 + 2 × 10 + 4
   Correct Option: (c) 4 × 10,00,000 + 5 × 1,00,000 + 2 × 10,000 + 1 × 1,000 + 1 × 100 + 2 × 10 + 4
   Solution:
   45,21,124 = 4 × 10,00,000 + 5 × 1,00,000 + 2 × 10,000 + 1 × 1,000 + 1 × 100 + 2 × 10 + 4
   
   
9. Swati uses 9 litres of water daily. Expressing the quantity of water in millilitres give
   (a) 90 millilitres
   (b) 900 millilitres
   (c) 9000 millilitres
   (d) 90000 millilitres
   Correct option: (c) 9000 millilitres
   Solution:
   1 litre = 1000 millilitres
   Then, 9 litres = 9 × 1000 = 9000 millilitres
   
   
10. The number name of greatest 4-digit number + 1 is
    (a) One thousand
    (b) Ten thousand
    (c) One lakh
    (d) Ten lakhs
    Correct option: (b) Ten thousand
    Solution:
    Greatest 4-digit number + 1 = 9999 + 1 = 10,000 = ten thousand
    
    
11. There are 10 lakh trees in a town. The number of trees in 10 such towns is
    (a) 10 millions
    (b) 1 million
    (c) 10 crore
    (d) 1 crore
    Correct option: (d) 1 crore
    Solution:
    10 lakhs × 10 = 10 ten lakhs = 1 crore
    
    
12. Which of the following is CORRECT statement?
    (a) Successor of a 2-digit number is always a 2-digit number.
    (b) Predecessor of a 4-digit number is always a 3-digit number.
    (c) The place value of 7 in 6117200 is 7000.
    (d) 3333 = 3 × 10,000 + 3 × 1,000 + 3 × 100 + 3 × 10
    Correct Option: (c) The place value of 7 in 6117200 is 7000.
    Solution:
    The place value of 7 in 6117200 is 7000.
    
    
13. In a smallest 7-digit number, there are __________ ten thousands
    (a) 10
    (b) 100
    (c) 1000
    (d) 0
    Correct option: (b) 100
    Solution:
    Smallest 7-digit number = 10,00,000
    Number of ten thousands 
    
    Subjective Questions
    
    
14. Find the difference between the smallest 9-digit number and the greatest 8-digit number.
    Solution:
    Smallest 9-digit number = 10,00,00,000
    Greatest 8-digit number = 9,99,99,999
    Difference = 10,00,00,000 – 9,99,99,999 = 1
    
    
15. Smriti everyday follows the below route from Stop 1 to Sop 4 to go to her office and come back. Find the total distance travelled by her in a day.
    
    Solution:
    Distance travelled from Stop 1 to Stop 4:
    
    Then, distance travelled on way back from Stop 4 to Stop 1 = 8785 m
    Therefore, total distance travelled by Smriti in a day is as follows
    
    
    
16. The savings in a bank account of Mr. Shastri was Rs. 1,24,11,900. He withdrew Rs. 5,00,000 for renovation work of his house. After completing the work, he again withdrew Rs. 1,50,000 for purchasing decorative items for his house. How much amount is left in his account?
    Solution:
    Total money in the bank account = Rs. 1,24,11,900
    Money withdrew for various purposes = Rs. 5,00,000 + Rs. 1,50,000 = Rs. 6,50,000
    Therefore, amount left in the bank account = Rs. 1,24,11,900 – Rs. 6,50,000 = Rs. 1,17,61,900.
    
    
17. What can be the sum of the place value of 7 in the number 2776700?
    Solution:
    Place value of underlined digit 2776700 = 7,00,000
    Place value of underlined digit 2776700 = 70,000
    Place value of underlined digit 2776700 = 700
    Sum = 7,00,000 + 70,000 + 700 = 7,70,700
    
    
18. Guess the number!
    
    Solution:
    A = 2,00,300
    B = 8,00,00,021
    
    
19. Arrange the below Laptops in ascending order of their prices.
    
    Solution:
    P < R < Q
    
    
20. A packet contains 60 toffees and there are 27 such packets. These toffees are needed to be equally distributed among 108 children. Find the share of each child.
    
    Solution:
    Number of toffees in one packet = 60
    Number of packets = 27
    Then, total number of toffees in 27 packets = 60 × 27 = 1620
    Number of children = 108
    Therefore, share of each child =15 toffees
    
    
21. A landline number consists of eight digits. The first four digits are 8, 8, 6 and 7. Make the greatest and the smallest landline number by using the digits 3, 0, 9 and 1 only once. 
    Solution:
    First four digits are 8, 8, 6 and 7.
    Greatest landline number = 88679310
    Smallest landline number = 88670139
    Hence, the greatest landline number is 88679310 and the smallest landline number is 88670139.
    
    
22. A car covers 23 km in 1 hour. How much distance will it cover in 6 hours. Express your answer in metres.
    Solution:
    Distance covered by car in 1 hour = 23 km
    Then, distance covered by car in 6 hours = 6 × 23 km = 138 km
    Now, 1 km = 1000 metre
    ⇒ 138 km = 138 × 1000 = 138000 metres.
    
    
23. Cultural event of a college is organised in a stadium. 6714 chairs are to be arranged in rows of 70. How many rows will be there? Will there be any chairs left over?
    Solution:
    Total chairs = 6714
    6714 are to be arranged in rows of 70.
    ⇒ Number of rows 
    
    Therefore, there will be 95 rows and left over chairs will be 64.