Divisibility Rules for Numbers 2 to 5

What does it mean for a number to be divisible by another number?

• It can be divided by that number and the quotient is always 0.

• It can be divided by that number and the quotient is always 1.

• It can be divided by that number without a remainder.

• It can be divided by that number with a remainder.

Which of the following numbers is divisible by 2?

• 357

• 246

• 468

• 135

If a number ends in an odd digit, is it divisible by 2?

• No

• Only if the number is even

• Yes

• Sometimes

How can you determine if a number is divisible by 3?

• If the last digit is 3

• If the sum of its digits is divisible by 3

• If the number is even

• If the number ends in 0 or 5

Is the number 123 divisible by 3?

• No, because it is an odd number

• No, because 1+2+3=6, and 6 is not divisible by 3

• Yes, because 1+2+3=6, and 6 is divisible by 3

• Yes, because it ends in 3

What is the rule for a number to be divisible by 4?

• The last digit must be 4

• The number must be even

• The last two digits form a number divisible by 4

• The sum of the digits is divisible by 4

Is the number 1324 divisible by 4?

• Yes, because 24 is divisible by 4

• No, because 24 is not divisible by 4

• Yes, because it ends in 4

• No, because it is an odd number

How can you tell if a number is divisible by 5?

• If it ends in 2 or 7

• If the sum of its digits is 5

• If it is an even number

• If it ends in 0 or 5

Is the number 945 divisible by 5?

• No, because it is an even number

• Yes, because it is an odd number

• Yes, because it ends in 5

• No, because it ends in 4

Which of the following numbers is NOT divisible by 5?

• 150

• 432

• 320

• 275