​Divisible by 2.

A number is dibisible by 2 if its last digit is even (0,2,4,6,8)

eg 4,136 is an even number ∴ it is dibisible by 2.

​Divisible by 3.

A number is dibisible by 3 if the sum of its digits is divisible by 3.

eg 312 is divisible by 3 as (3+1+2=6, and 6/3=2) ∴ 312 is dibisible by 3.

​Divisible by 4.

A number is dibisible by 4 if its last 2 digits are zeros or divisible by 4

eg 76,112, its last two digits are 12, and 12 ÷ 4 = 3 ∴ it is divisible by 4.

​

eg 4,200, its last two digits are 00​ ∴ it is divisible by 4.

​Divisible by 5.

A number is dibisible by 5 if its last digit is 0 or 5.

eg 4,135 finishs in 5 ∴ it is dibisible by 5.

​Divisible by 6.

A number is dibisible by 6 if its divisible by both 2 and 3.

eg 40,002 is a even number (because it ends in 2) and its digit sum (4+0+0+0+0+2 = 6, and 6/3 =2) is divisible by 3 ∴ 40,002 is dibisible by 6.

​Divisible by 8.

Is 1,016 divisible by 8?

• The last 3 digits form the number 016, or 16.

• 16 is divisible by 8, so 1,016 is divisible by 8.

​Divisible by 9.

A number is divisible by 9 if the sum of its digits is divisible by 9.

Is 675 divisible by 9?

• Add the digits. 6+7+5=18

• 18 is divisible by 9, so 675 is divisible by 9.

​Divisible by 10.

A number is divisible by 10 if its ones digit is 0.

​Is 420 divisible by 10?

• The ones digit in 420 is 0.

• So, 420 is divisible by 10.