| A | B |
| factor tree | A method used to find a number's prime factors. |
| divisible | When a number divides another number if the remainder is zero. |
| factor | A whole number that divides another whole number with no remainder. |
| mixed number | The sum of a whole number and a fraction. |
| prime number | A number which has exactly two factors, 1 and the number itself. |
| simplest form | The condition of a fraction when the only common factor of the numerator and the denominator is 1. |
| LCD | The least common multiple of the denominators of two or more fractions. |
| multiple | The product of a number and a nonzero whole number. |
| improper fraction | A fraction that has a numerator that is greater than or equal to the denominator. |
| composite number | A whole number that has two or more factors. |
| GCF | The greatest number that is a factor of two or more numbers. |
| equivalent fractions | Fractions that are equal to each other. |
| prime factorization | When a composite number is written as the product of its prime factors. |
| LCM | The least number that is a multiple of two or more numbers. |