Divisibility with 3 and 9

Which of the following numbers is a multiple of 3?

• 22

• 27

• 41

• 50

Which of these numbers is NOT a multiple of 9?

• 18

• 36

• 45

• 54

What is the divisibility rule for 3?

• The number ends in 3

• The sum of the digits is a multiple of 3

• The number is even

• The number ends in 0

Which of the following numbers is divisible by both 3 and 9?

• 27

• 21

• 33

• 45

If the sum of the digits of a number is 18, which of the following statements is true?

• The number is divisible by 3 but not by 9

• The number is divisible by 9 but not by 3

• The number is divisible by both 3 and 9

• The number is not divisible by either 3 or 9

Which of these numbers is a multiple of 9?

• 63

• 72

• 81

• 99

A box contains 54 pencils. If each student gets 9 pencils, how many students can get pencils?

• 5

• 6

• 7

• 8

Which of the following numbers is NOT divisible by 3?

• 24

• 35

• 42

• 51

If a number is divisible by 9, which of the following must also be true?

• It is divisible by 2

• It is divisible by 3

• It is divisible by 5

• It is divisible by 7

What is the sum of the digits of 243?

• 6

• 7

• 8

• 9