Interactive Quiz on Number Play - Grade 8 Mathematics | Concept of Maths

Question 1

1. What is the generalized form of a 3-digit number \( abc \)?

A) \( 100a + 10b + c \)

B) \( 100a + b + c \)

C) \( 10a + b + c \)

D) \( a + b + c \)

Answer

Correct Answer: A

Question 2

2. The sum of a 2-digit number \( ab \) and the number obtained by reversing its digits (\( ba \)) is always divisible by:

A) 9

B) 10

C) 11

D) 12

Answer

Correct Answer: C

Question 3

3. The difference between a 2-digit number \( ab \) and the number obtained by reversing its digits (\( ba \)) is always divisible by:

A) 9

B) 10

C) 11

D) 12

Answer

Correct Answer: A

Question 4

4. If the number \( 24x \) is divisible by 3, what is the least possible value for the digit \( x \)?

A) 0

B) 1

C) 2

D) 3

Answer

Correct Answer: A

Question 5

Question 6

6. Solve the cryptarithm: \( A + A + A = BA \). Find the values of \( A \) and \( B \).

A) \( A=4, B=1 \)

B) \( A=5, B=1 \)

C) \( A=6, B=1 \)

D) \( A=5, B=2 \)

Answer

Correct Answer: B

Question 7

7. If the division \( N \div 5 \) leaves a remainder of 3, what might be the ones digit of \( N \)?

A) 0 or 5

B) 1 or 6

C) 2 or 7

D) 3 or 8

Answer

Correct Answer: D

Question 8

8. The number \( 5x2 \) is a multiple of 11. Find the value of the digit \( x \).

A) 4

B) 5

C) 6

D) 7

Answer

Correct Answer: D

Question 9

9. Solve the cryptarithm: \( 3A + 25 = B2 \). Find \( A \) and \( B \).

A) \( A=7, B=6 \)

B) \( A=6, B=7 \)

C) \( A=5, B=6 \)

D) \( A=7, B=5 \)

Answer

Correct Answer: A

Question 10

10. Let \( abc \) be a 3-digit number. The result of \( abc - cba \) is always divisible by:

A) 11

B) 99

C) 101

D) 111

Answer

Correct Answer: B

Question 11

11. The sum of the digits of a 2-digit number is 9. When the digits are interchanged, the resulting number is 27 more than the original number. What is the original number?

A) 27

B) 36

C) 45

D) 63

Answer

Correct Answer: B

Question 12

12. If a number is divisible by both 5 and 6, then it must also be divisible by:

A) 11

B) 15

C) 30

D) 60

Answer

Correct Answer: C

Question 13

13. The generalized form \( 1000a + 10b + c \) represents which of the following numbers?

A) \( a0bc \)

B) \( ab0c \)

C) \( a00bc \)

D) \( abc \)

Answer

Correct Answer: A

Question 14

14. If \( 21y5 \) is a multiple of 9, where \( y \) is a digit, what is the value of \( y \)?

A) 0

B) 1

C) 2

D) 3

Answer

Correct Answer: B

Question 15

15. Find the value of \( Q \) in the multiplication cryptarithm: \( 1Q \times Q = 9Q \).

A) 4

B) 5

C) 6

D) 7

Answer

Correct Answer: C

Question 16

16. According to divisibility rules, a number is divisible by 8 if the number formed by its ____________ is divisible by 8.

A) Last digit

B) Last two digits

C) Last three digits

D) Sum of digits

Answer

Correct Answer: C

Question 17

17. If \( 52x \) is divisible by 4, what is the largest single-digit value possible for \( x \)?

A) 4

B) 6

C) 8

D) 9

Answer

Correct Answer: C

Question 18

18. For any 3-digit number \( abc \), the sum \( abc + bca + cab \) is always perfectly divisible by:

A) 11

B) 37

C) 9

D) 99

Answer

Correct Answer: B

Question 19

19. If \( N \div 2 \) leaves a remainder of 1, what must be true about the ones digit of \( N \)?

A) It is an even digit

B) It is an odd digit

C) It is a prime digit

D) It must be 0 or 5

Answer

Correct Answer: B

Question 20

20. Solve the cryptarithm: \( AB \times 3 = CAB \). Find the values of \( A \), \( B \), and \( C \).

A) \( A=5, B=0, C=1 \)

B) \( A=1, B=5, C=0 \)

C) \( A=5, B=5, C=1 \)

D) \( A=0, B=5, C=1 \)

Answer

Correct Answer: A

Accepted Answer

Correct Answer: A

Master Number Play: Grade 8 Math Quiz | Concept of Maths

Master Number Play: Grade 8 Math Quiz | Concept of Maths

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5. If the number \( 31z5 \) is a multiple of 9, what is the value of the digit \( z \)?

6. Solve the cryptarithm: \( A + A + A = BA \). Find the values of \( A \) and \( B \).

7. If the division \( N \div 5 \) leaves a remainder of 3, what might be the ones digit of \( N \)?

8. The number \( 5x2 \) is a multiple of 11. Find the value of the digit \( x \).

9. Solve the cryptarithm: \( 3A + 25 = B2 \). Find \( A \) and \( B \).

10. Let \( abc \) be a 3-digit number. The result of \( abc - cba \) is always divisible by:

11. The sum of the digits of a 2-digit number is 9. When the digits are interchanged, the resulting number is 27 more than the original number. What is the original number?

12. If a number is divisible by both 5 and 6, then it must also be divisible by:

13. The generalized form \( 1000a + 10b + c \) represents which of the following numbers?

14. If \( 21y5 \) is a multiple of 9, where \( y \) is a digit, what is the value of \( y \)?

15. Find the value of \( Q \) in the multiplication cryptarithm: \( 1Q \times Q = 9Q \).

16. According to divisibility rules, a number is divisible by 8 if the number formed by its ____________ is divisible by 8.

17. If \( 52x \) is divisible by 4, what is the largest single-digit value possible for \( x \)?

18. For any 3-digit number \( abc \), the sum \( abc + bca + cab \) is always perfectly divisible by:

19. If \( N \div 2 \) leaves a remainder of 1, what must be true about the ones digit of \( N \)?

20. Solve the cryptarithm: \( AB \times 3 = CAB \). Find the values of \( A \), \( B \), and \( C \).

Interactive Quiz on Number Play - Grade 8 Mathematics | Concept of Maths

1. What is the generalized form of a 3-digit number \( abc \)?

2. The sum of a 2-digit number \( ab \) and the number obtained by reversing its digits (\( ba \)) is always divisible by:

3. The difference between a 2-digit number \( ab \) and the number obtained by reversing its digits (\( ba \)) is always divisible by:

4. If the number \( 24x \) is divisible by 3, what is the least possible value for the digit \( x \)?

Master Number Play: Grade 8 Math Quiz | Concept of Maths

Master Number Play: Grade 8 Math Quiz | Concept of Maths

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5. If the number \( 31z5 \) is a multiple of 9, what is the value of the digit \( z \)?

6. Solve the cryptarithm: \( A + A + A = BA \). Find the values of \( A \) and \( B \).

7. If the division \( N \div 5 \) leaves a remainder of 3, what might be the ones digit of \( N \)?

8. The number \( 5x2 \) is a multiple of 11. Find the value of the digit \( x \).

9. Solve the cryptarithm: \( 3A + 25 = B2 \). Find \( A \) and \( B \).

10. Let \( abc \) be a 3-digit number. The result of \( abc - cba \) is always divisible by:

11. The sum of the digits of a 2-digit number is 9. When the digits are interchanged, the resulting number is 27 more than the original number. What is the original number?

12. If a number is divisible by both 5 and 6, then it must also be divisible by:

13. The generalized form \( 1000a + 10b + c \) represents which of the following numbers?

14. If \( 21y5 \) is a multiple of 9, where \( y \) is a digit, what is the value of \( y \)?

15. Find the value of \( Q \) in the multiplication cryptarithm: \( 1Q \times Q = 9Q \).

16. According to divisibility rules, a number is divisible by 8 if the number formed by its ____________ is divisible by 8.

17. If \( 52x \) is divisible by 4, what is the largest single-digit value possible for \( x \)?

18. For any 3-digit number \( abc \), the sum \( abc + bca + cab \) is always perfectly divisible by:

19. If \( N \div 2 \) leaves a remainder of 1, what must be true about the ones digit of \( N \)?

20. Solve the cryptarithm: \( AB \times 3 = CAB \). Find the values of \( A \), \( B \), and \( C \).