| A | B |
|---|
| greatest common factor (GCF) | The largest number that is a factor of two or numbers. |
| compatible numbers | Numbers that are easy to compute mentally. |
| round | To give an approximation for a number to the nearest one, ten, hundred, thousand, and so on. |
| reciprocal | Two numbers whose product is one. |
| multiplicative inverse | Another word for "round". Two numbers whose product is one. |
| mixed number | A number that combines a whole number and a fraction. |
| improper fraction | A fraction in which the numerator is greater or equal to its denominator. |
| inverse operations | Operations that "undo"each other, such as addition and subtraction, or multiplication and division (except for multiplication by 0. |
| denominator | The number below the fraction bar; the total number of parts in all. |
| variable | A quantity that can change or vary, often represented with a number. |
| numerator | The number above the fraction bar in a fraction; the number of objects or equal parts being considered. |
