| A | B |
|---|
| Divisible | can be divided by another number without leaving a remainder |
| Divisibility rule for 2 | last digit is even |
| Divisibility rule for 3 | sum of the digits is divisible by 3 |
| Divisibility rule for 4 | last 2 digits form a number divisible by 4 |
| Divisibility rule for 5 | last digit is 0 or 5 |
| Divisibility rule for 6 | divisible by 2 AND 3 |
| Divisibility rule for 9 | sum of the digits is divisible by 9 |
| Divisibility rule for 10 | last digit is 0 |
| prime number | exactly 2 factors: 1 and itself |
| composite number | 3 or more factors |
| factor tree | diagram showing how composite number breaks down into prime factors (tool NOT answer) |
| prime factorization | unique ordered list of prime factors of a composite number |
| multiple | product of a given number and any whole number |
| factor | a number that divides another number without a remainder |
| common multiple | a number that is a multiple of each of two (or more) other numbers |
| least common multiple (LCM) | the smallest multiple that two (or more) numbers share |
