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\ 18-Nov-2025 Bharat Arora Proof-9 Reader’s Sign _______________________ Date __________

8. write these numbers in descending order.
a. 2,63,792, 10,19,923, 2,05,479, 10,06,165, 1,50,358

b. 1,29,657, 3,07,689, 2,96,545, 27,89,988, 21,34,560
9. write the smallest and the greatest numbers using each of the following digits only

once.
a. 3, 7, 8, 4, 0, 6 __________ b. 8, 0, 5, 1, 3, 9, 6 __________

10. a. Write the smallest 6-digit number with all different digits. __________
b. Write the greatest 6-digit number with all different digits. __________
11. a. Write the smallest 7-digit number with three different digits. __________

b. Write the greatest 7-digit number with three different digits. __________
12. Round off the following numbers to the nearest 10, 100 and 1000.

Number Rounded off to the
Nearest 10 Nearest 100 Nearest 1000
a. 5,83,320
b. 16,09,329

c. 2,89,536
d. 4,01,289

Mental Maths
Choose the correct option.
21 st
1. Commas are inserted in a number after each: Century #Critical Thinking
Skills
a. digit b. place c. period d. group
2. A 7-digit number starts with the ________ place in the Indian system.

a. lakhs b. ten thousands c. ten lakhs d. thousands
3. The place value and face value of a digit are always equal in the:

a. ones place b. tens place c. hundreds place d. None of these
4. The number of zeros in 10 lakh is:
a. 4 b. 5 c. 6 d. 7

Puzzle Century
21 st
Skills #Life Skills and Values
A boatman wants to cross a river in a boat. He has to take a lion, a sheep, and a bundle of

grass with him. He can take one of them at a time. If the sheep and grass are left on the shore,
the sheep will eat the grass. If the sheep and lion are left on the shore, the lion will eat the
sheep. How can the boatman take the lion, sheep, and grass across the river?

26 Mathematics 5