Divisibility Rules for 2, 5, and 10

What is a divisibility rule?

• A shortcut to determine if a number can be divided by another without performing the division

• A method to find the remainder of a division

• A rule to add numbers

• A way to multiply numbers quickly

Which of the following numbers is divisible by 2?

• 91

• 73

• 68

• 57

A number is divisible by 2 if it ends in which of the following digits?

• 3, 6, 9, 12, 15

• 2, 4, 6, 8, 10

• 0, 2, 4, 6, 8

• 1, 3, 5, 7, 9

Which of these numbers is NOT divisible by 2?

• 774

• 40

• 321

• 56

A number is divisible by 5 if it ends in which digits?

• 2 or 4

• 0 or 5

• 5 or 7

• 0 or 2

Which of the following numbers is divisible by 5?

• 935

• 2822

• 5678

• 1234

Which number is NOT divisible by 5?

• 2822

• 50

• 2640

• 935

A number is divisible by 10 if it ends in which digit?

• 2

• 8

• 0

• 5

Which of these numbers is divisible by 10?

• 123

• 456

• 91

• 750

Which of the following numbers is NOT divisible by 10?

• 1230

• 1234

• 90

• 100