Divisibility Rules of 4,8,11,12

1. Which of the following numbers is divisible by 8?

• a. 542

• b. 832

• c. 658

• d. 108

2. Which statement supports the divisibility rule for number 11?

• a. If the difference of the digits at alternate place values is divisible by 11.

• b. If the difference of the sums of the digits at alternate place values is divisible by 11

• c. If the sum of the difference of the digits at alternate place values is divisible by 11

• d. Both b and c.

3. Which number is NOT divisible by 4?

• a. 360

• b. 218

• c. 208

• d. 124

4. Which of the following statement is NOT true?

• a. If a number is divisible by 8, then 8 is a factor of the number.

• b. If a number is divisible by 4, then it is divisible by 8.

• c. If the sum of all the digits in the number is divisible by 9, then it is divisible by 9.

• d. If the last digit of the number ends in 0, it is divisible by 2 and 10.

5.Which of the following is a number divisible by 4 but not by 8?

• a. 1236

• b. 6312

• c. 2344

• d. 1632

6. What is the smallest number divisible by 11 between 300 - 500?

• a. 330

• b. 320

• c. 340

• d. 350

7. I have a number. This number is divisible by 9. If you get the sum of its digits, the result is 18. What is my number?

• a. 88

• b. 66

• c. 77

• d. 99

8. Which of the following is a true statement?

• a. If a number is divisible by 4 it is also divisible by 2.

• b. Any number divisible by 4 is also divisible by 8.

• c. A number is divisible by 12 if the sum of the digits are divisible by 3 and 4.

• d. None of the above.

9.My mother’s age is greater than 60 but less than 70. Her age is divisible by 2, 3, 6 and 11. How old is my mother?

• a. 66

• b. 63

• c. 65

• d. 64

10. The average of 6 numbers is 66. If 75 and 89 are added to the 6 numbers, what is the new average?

• a. 70

• b. 76

• c. 72

• d. 74