Question 1

1. The general form of a two-digit number ab is given by:

0) 10a + b1) 10b + a2) a + b3) $a \times b$

Answer

✓ Correct Answer: Option 0

Question 2

2. If 31z5 is a multiple of 3, where z is a single digit, what is the least possible value of z?

0) 01) 12) 23) 3

Answer

✓ Correct Answer: Option 0

Question 3

Question 4

4. The sum of a two-digit number ab and the number obtained by reversing its digits ba is always exactly divisible by:

0) 91) 102) 113) 12

Answer

✓ Correct Answer: Option 2

Question 5

5. If the number 24x is a multiple of 9, what is the value of the digit x?

0) 11) 32) 63) 9

Answer

✓ Correct Answer: Option 1

Question 6

6. In the cryptarithm A + A + A = BA, what are the respective values of digits A and B?

0) A = 5, B = 11) A = 1, B = 52) A = 4, B = 13) A = 6, B = 1

Answer

✓ Correct Answer: Option 0

Question 7

7. The general expanded form of a three-digit number abc is:

0) 100a + 10b + c1) 100c + 10b + a2) a + b + c3) 1000a + 10b + c

Answer

✓ Correct Answer: Option 0

Question 8

8. If a number is divisible by both 2 and 3, it is always divisible by:

0) 51) 62) 83) 9

Answer

✓ Correct Answer: Option 1

Question 9

9. The sum of the digits of a two-digit number is 9. If 27 is added to the number, its digits get reversed. What is the number?

0) 271) 362) 633) 45

Answer

✓ Correct Answer: Option 1

Question 10

10. A number is definitively divisible by 5 if its units digit is:

0) 0 or 21) 2 or 52) 0 or 53) 5 only

Answer

✓ Correct Answer: Option 2

Question 11

11. Find the value of Q in the addition: 31Q + 1Q3 = 501.

0) 61) 72) 83) 9

Answer

✓ Correct Answer: Option 2

Question 12

12. What is the smallest 3-digit number that is divisible by 4?

0) 1001) 1042) 1123) 120

Answer

✓ Correct Answer: Option 0

Question 13

13. If $A \times 3 = 1A$, what is the value of the digit A?

0) 21) 42) 53) 6

Answer

✓ Correct Answer: Option 2

Question 14

14. If 52x is a multiple of 11, what is the value of digit x?

0) 61) 72) 83) 9

Answer

✓ Correct Answer: Option 2

Question 15

15. Which of the following is NOT a valid single digit in the base-10 number system?

0) 01) 52) 93) 10

Answer

✓ Correct Answer: Option 3

Question 16

16. A three-digit number abc is divisible by 10 if and only if:

0) a = 01) b = 02) c = 03) c = 5

Answer

✓ Correct Answer: Option 2

Question 17

17. Given the multiplication puzzle $1Z \times Z = 9Z$, find the digit Z.

0) 41) 52) 63) 8

Answer

✓ Correct Answer: Option 2

Question 18

18. The difference between a 3-digit number abc and its reversed form cba (assuming a > c) is always divisible by:

0) 111) 992) 1003) 90

Answer

✓ Correct Answer: Option 1

Question 19

19. Find the values of A and B if $AB \times 6 = BBB$.

0) A = 7, B = 41) A = 4, B = 72) A = 7, B = 23) A = 4, B = 4

Answer

✓ Correct Answer: Option 0

Question 20

20. Any six-digit number formed by repeating a three-digit block, like abcabc, is always exactly divisible by:

0) 7, 11 and 131) 3, 7 and 112) 2, 3 and 53) 11, 13 and 17

Answer

✓ Correct Answer: Option 0

Accepted Answer

✓ Correct Answer: Option 1

Story of Numbers Quiz | Grade 8 Mathematics Practice

1. The general form of a two-digit number ab is given by:

2. If 31z5 is a multiple of 3, where z is a single digit, what is the least possible value of z?

3. The difference ab - ba (where a > b) of a two-digit number and its reversed form is always divisible by:

4. The sum of a two-digit number ab and the number obtained by reversing its digits ba is always exactly divisible by:

5. If the number 24x is a multiple of 9, what is the value of the digit x?

6. In the cryptarithm A + A + A = BA, what are the respective values of digits A and B?

7. The general expanded form of a three-digit number abc is:

8. If a number is divisible by both 2 and 3, it is always divisible by:

9. The sum of the digits of a two-digit number is 9. If 27 is added to the number, its digits get reversed. What is the number?

10. A number is definitively divisible by 5 if its units digit is:

11. Find the value of Q in the addition: 31Q + 1Q3 = 501.

12. What is the smallest 3-digit number that is divisible by 4?

13. If $A \times 3 = 1A$, what is the value of the digit A?

14. If 52x is a multiple of 11, what is the value of digit x?

15. Which of the following is NOT a valid single digit in the base-10 number system?

16. A three-digit number abc is divisible by 10 if and only if:

17. Given the multiplication puzzle $1Z \times Z = 9Z$, find the digit Z.

18. The difference between a 3-digit number abc and its reversed form cba (assuming a > c) is always divisible by:

19. Find the values of A and B if $AB \times 6 = BBB$.

20. Any six-digit number formed by repeating a three-digit block, like abcabc, is always exactly divisible by: