Divisibility

Divisibility by: 2,3,4,5,6,9,10

2,799,588 5,670 100,765

2 2

For the 3 apply the digits

Determine whether 380 is divisible by 2,3,4,5,6,9 or 10

Divisible by 2 - yesby three - add the digits = 3 + 8 + 0 = 11not divisible by three

4 ? Are the last two digits divisible by four ?Yes.

To be divisible by 6 - it must be divisible by what makes 6 - 2 X 3 - We are not divisible by 6 here

The why of the 3 divisibility rule4792 is it divisible by three ? Add the digits

The why of the 9 divisibility rule2 ( 1000) + 9(100) + 9 ( 10) + 3

2 (1 + 9999) + 9 (1 + 99) + 9 ( 1 + 9) + 3

2 + 2 999 + 9 + 9 x 99 + + 4 + 4 x 9 + 3

2 X 999 + 9 X 99 + 4 X 9 + 2 + 9 + 4 + 3