| A | B |
|---|
| prime numbers | A whole number greater than 1 whose only whole number factors are one and itself. Examples: 2, 3, 5, etc. |
| composite numbers | A whole number greater than 1 that has positive factors other than 1 and itself. Examples: 4, 22, 35, etc |
| prime factorization | Expressing a whole number as a product of prime numbers. Example: 54 = 2 x 3 x 3 x 3 |
| factor tree | A diagram used to write the prime factorization of a number. |
| common factor | A whole number that is a factor of two or more nonzero numbers. |
| greatest common factor | The greatest whole number that is a factor of two or more nonzero whole numbers. |
| numerator | The number a in the fraction a/b . |
| denominator | The number b in the fraction a/b where b ≠ 0. |
| equivalent fractions | Fractions that represent the same part-to-whole relationship. Equivalent fractions have the same simplest form. |
| simplest form (of a fraction) | A fraction in simplest form of its numerator and denominator have a greatest common factor of 1. |
| relatively prime numbers | Two or more nonzero whole numbers whose greatest common factor is 1. |
| multiple | The product of a number and any nonzero whole number. |
| common multiple | A multiple that is shared by two or more numbers. |
| least common multiple (LCM) | The least number that is a common multiple of two or more numbers. |
| lowest common denominators (LCD) | The least common multiple of the denominators of two or more numbers. |
| mixed number | A number that has a whole number part and a fraction part. |
| proper fraction | A fraction whose numerator is less than its denominator. |
| improper fraction | A fraction whose numerator is greater than or equal to its denominator. |
| terminating decimal | A decimal that has a final digit. |
| repeating decimal | A decimal that has one or more digits that repeat without end. |
| fraction | A number of the form a/b where b ≠ 0. |
