Divisibility Rules,which go with the multiples, we have learned. (Divisibility means you can divide evenly by a number and not have a remainder.):
TWOs: All even numbers are divisible by two.
THREEs: All numbers with a digital root of 3, 6 or 9 are divisible by 3.
FOURs: Even numbers with the numerals in the ten’s and one’s place are divisible by 4. Ex: 7,596 is divisible by 4 because 96 is divisible by 4 (We broke the number 96 into 80 + 16)
FIVEs: Any number with a zero or a five in the one’s place is divisible by 5.
SIXes: All even numbers with a digital root of 3, 6 or 9 are divisible by 6.
NINEs: All numbers with a digital root of 9 are divisible by 9.
TENs: All numbers with a zero in the one’s place are divisible by 10.