Respuesta :
Add the digits together and if 3 will divide evenly into the answer, it is divisible by 3
For instance:
6 + 9 = 15
15 /3 = 5
3 divides into 15 evenly so 69 is divisible by 3
For instance:
6 + 9 = 15
15 /3 = 5
3 divides into 15 evenly so 69 is divisible by 3
