Divisibility

Is 7 a factor of 84?

• Yes

• No

Is 6 a factor of 54?

• Yes

• No

Is 2 a factor of 64?

• Yes

• No

Is 5 a factor of 75?

• Yes

• No

Is 96 divisible by 8?

• Yes

• No

Any whole number is divisible by 9 if the sum of the digitis 

• is divisible by 9

• is divisible by 4

• ends in 0 or 5

• ends in 3, 6, or 9

What is the divisibility rule for 3?

• Add up the digits. The sum must be even and divisible by 3.

• The digits must add up to 9.

• The last digit must be a 3.

• Add up the digits. The sum must be divisible by 3.

What is the divisibility rule for 5?

• The digits must add up to 10.

• The last digit needs to be a 5 or 0.

• The last digit can only be a 5.

• The sum of the digits need to be divisible by 5.

Is 64 divisible by 2?

• Yes

• No

252 is divisible by 9 because:

• The digits add up to 18.

• The sum of the digits is divisible by 9.

• It's even and the sum of the digits is divisible by 3.

• The sum of the digits is even.