Divisibility means one number divides another without remainder. Divisibility tests help identify factors without division
Divisibility rules help check if a number is divisible by another without long division. Every number is divisible by 1, so the rule of 1 is unnecessary. Divisibility tests use digits to determine actual divisors
LCM is the smallest number that is divisible by two or more numbers. LCM cannot be less than any number except 0. LCM can be calculated for two or more numbers using three methods
Calculator finds factors, prime factors, and factor pairs of a number. Factors are integers that divide a number exactly without remainder. Prime factors are numbers greater than 1 with only 1 and itself as divisors
A number is divisible by 2 if it ends in 2, 4, 6, 8, or 0. A number is divisible by 3 if its digit sum is divisible by 3. A number is divisible by 4 if its last two digits are divisible by 4. A number is divisible by 5 if its last digit is 0 or 5. A number is divisible by 6 if it is divisible by both 2 and 3
A number is divisible if it can be divided by another number. A completely divisible number leaves a remainder other than zero