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1. Which of the following is NOT a palindrome?
A. 121
B. 333
C. 234
D. 989
2. If you reverse and add the number 47, what palindrome do you get?
A. 101
B. 121
C. 99
D. 484
3. Which is the smallest 4-digit palindrome?
A. 1001
B. 1111
C. 1221
D. 2112
4. Which of the following can NEVER be a palindrome?
A. An odd number
B. A prime number
C. A two-digit number with different digits
D. A number with repeated digits
5. What is the Kaprekar constant for a 3-digit number?
A. 495
B. 617
C. 123
D. 543
6. Which of these is part of the Kaprekar process?
A. Multiplying by 2
B. Subtracting the smallest number from the largest number formed from the digits
C. Adding the smallest number to the largest number
D. Dividing the number by 3
7. What is the number halfway between 4000 and 6000 on a number line?
A. 4500
B. 5000
C. 5500
D. 4750
8. On a number line, which of these numbers is closest to 10,000?
A. 9800
B. 8500
C. 9250
D. 1000
9. Which number is exactly between 3050 and 5030 on the number line?
A. 4000
B. 4040
C. 4050
D. 4500
10. Estimate the sum of 3780 and 6300 to the nearest thousand.
A. 9000
B. 10,000
C. 11,000
D. 12,000
11. If a number is larger than all of its neighboring numbers in a table, it is called a:
A. Supercell
B. Maximum cell
C. Palindrome
D. Prime cell
12. Which of the following can be a supercell in a table?
A. The largest number
B. A middle number that is greater than its neighbors
C. The smallest number
D. Any number placed at the edges
13. In a table, if the supercell is located in the center, which of the following is true?
A. It is smaller than its neighboring numbers
B. It is equal to its neighboring numbers
C. It is larger than its neighboring numbers
D. It cannot be a supercell
14. What is the next number in the Collatz sequence starting with 17: 17, 52, __?
A. 40
B. 26
C. 13
D. 8
15. In the Collatz sequence, which number comes after 5?
A. 8
B. 10
C. 3
D. 4
16. A year in which the calendar can repeat exactly after some years is called a:
A. Prime year
B. Leap year
C. Circular year
D. Repeating year
17. If today is January 1st, 2024, what is the date after 100 days?
A. March 30, 2024
B. April 10, 2024
C. April 11, 2024
D. April 20, 2024
18. What is the result of 1234 + 5678?
A. 6802
B. 6912
C. 6902
D. 6801
19. What is 9000 – 3567?
A. 5433
B. 4567
C. 6433
D. 7467
20. What is 4567 divided by 7?
A. 651
B. 652
C. 653
D. 654
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