| A | B |
| fraction | a number that names part of the whole or part of a group |
| unit fraction | a fraction with a numerator of 1; can be expressed as the sum of two equal unit fractions |
| numerator | the number above the bar in a fraction that tells how many parts of the whole are being considered |
| denominator | the number below the bar in a fraction that tells how many equal parts are in the whole |
| equivalent fractions | two or more fractions that name the same amount |
| simplest form | a fraction that 1 is the only number that can divide evenly into the numerator and the denominator |
| mixed number | a number represented by a whole number and a fraction |
| improper fraction | a fraction whose numerator is larger than the denominator |