| A | B |
| divisible | can be divided by another number without leaving a remainder |
| prime number | has exactly two factors, 1 and itself |
| composite number | has more than two factors |
| prime factorization | it is the "thumbprint" of a composite number. It is the set of primes whose product equals the number |
| multiple | is the product of the number and a whole number |
| Least Common Multiple (LCM) | the least common multiple of two numbers |
| fraction | describes part of a whole when the whole is cut into equal parts |
| denominator | gives the number of parts in the whole |
| numerator | tells how many of the parts are being named |
| common factor | a number that is a factor of two different numbers |
| lowest terms | no whole number other than one will divide both the numerator and denominator |
| Greatest Common Factor (GCF) | the greatest whole number that will divide both the numerator and denominator |
| improper fraction | has a numerator that is greater than or equal to its denominator |
| mixed number | combines a whole number and a fraction |
| terminating decimal | a decimal number that ends |
| repeating decimal | a decimal number that repeats a pattern of digits continuously on the right |
| common denominator | when two fractions have the same denominator |
| factor | a number that divides another number without remainder |