3A - Divisibility Rules

What number does this rule apply to?

If the last digit ends in 0, 2, 4, 6, 8.

• 2

• 3

• 4

• 5

Which number does this rule apply to?

The last 2 digits must be divisible by _

• 3

• 4

• 5

• 6

The sum of the digits must be divisible by _

• 3

• 4

• 5

• 6

The number is divisible by _ if it's also divisible by 2 and 3.

• 4

• 5

• 6

• 9

All of these numbers are divisible by 5 except for...

• 75,395

• 222,222,235

• 984,940

• 8,943,892

 

Is 1,284,604 divisible by 2?

• Yes, because the sum of the digits is 20, which is an even number

• No, because 4 is an odd number

• Yes, because 4 is an even number

• No, because the it is not divisible by 3

Is 816 divisible by 3?

• Yes

• No

 

Is 555,509 divisible by 3?

• Yes

• No

 

2520 is divisible by 6 because:

• It is divisible by 2 (even) and 5 (ends in a 0 or 5)

• The sum of the digits is 12, a multiple of 6

• It's divisible by 2 (even) and 3 (sum of digits is a multiple of 3)

• The sum of the digits is even

 

Is 36,928 divisible by 4?

• Yes, because the sum of the digits is a multiple of 4

• Yes because the last two digits, 28, is divisible by 4

• Yes, because it is an even number

• Yes, because it is divisible by 2 and 3