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\ 10-Nov-2025 Bharat Arora Proof-8 Reader’s Sign _______________________ Date __________

4. Write the successor and predecessor of the following numbers.

a. 14,586 __________ __________ b. 32,008 __________ __________
c. 39,009 __________ __________ d. 69,897 __________ __________

5. Arrange the following numbers as directed.

a. 28,500; 82,500; 52,800; 58,002; 39,542; 67,019 in ascending order.
b. 87,696; 37,852; 9,998; 3,705; 78,765; 98,677 in descending order.

6. Write the 'greatest' number using the following digits only once.

a. 3, 4 and 8 b. 7, 0 and 8 c. 1, 3 and 9

7. Write the greatest 5-digit number using the digits 8, 4, 7 and 3 (repetition of digits is allowed).

8. Write the smallest and the greatest 4-digit numbers using the following digits
(repetition of digits is allowed).

Smallest Number greatest Number

a. 1, 2 and 3

b. 2, 9 and 5

c. 3, 1 and 0

Mental Maths

Choose the correct option. 21 st
Century #Critical Thinking
Skills
1. Which is the same as 70 tens?
a. 7 ones b. 70 ones c. 7 hundreds d. 70 hundreds
2. Ten thousand is a ________-digit number.

a. four b. five c. six d. seven

3. Which number has 5 in the thousands place?
a. 85,420 b. 82,059 c. 8,72,500 d. 58,560

4. Which number has the smallest value in the hundreds place?
a. 89,876 b. 76,589 c. 78,777 d. 29,094

5. The successor of the greatest 4-digit number is

a. 10,000 b. 9,999 c. 9,998 d. 10,001
6. Which of the following numbers lies between 1,234 and 4,321?

a. 1,023 b. 2,341 c. 4,325 d. 1,232

22 Mathematics 4