Divisibility, Factors, Multiples, GCF, LCM and Word Problems

A number is divisible by 2 if it is:

• Odd

• Even

• Prime

• Divisible by 5

Which of the following numbers is divisible by 5?

• 243

• 400

• 512

• 97

A number is divisible by both 3 and 9. Which of the following could be the number?

• 45

• 18

• 29

• 91

Which of the following numbers is divisible by 6?

• 30

• 35

• 20

• 25

What is the divisibility rule for 11?

• The number ends in 0 or 5.

• The difference between the sum of the digits in odd and even positions is divisible by 11.

• The number is divisible by both 3 and 2.

• The sum of the digits is divisible by 9.

Which of the following is NOT divisible by 12?

• 146

• 48

• 72

• 36

What are the factors of 36?

• 1, 2, 3, 6, 12

• 1, 2, 3, 6, 9, 12, 18, 36

• 1, 2, 3, 4, 6, 9

• 1, 2, 3, 5, 10, 15

What are the first three multiples of 7?

• 7, 14, 21

• 7, 15, 22

• 8, 15, 21

• 7, 13, 20

Which of the following is a factor of 24?

• 3

• 5

• 7

• 9

A number is divisible by both 3 and 5. Which of the following could it be?

• 30

• 45

• 60

• All of the above