| A | B |
| numerator | the number above the bar in a fraction that tells how many equal 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 |
| like denominators | two or more denominators that are the same number |
| improper fractions | a fraction where thw numerator is larger than the denominator |
| equivalent fractions | fractions that name the same number or amount |
| unlike denominators | two or more denominators that are not the same |
| least common denominator | the least common multiple of two or more denominators |
| area model | a rectangular diagram used to model multiplication and division of whole numbers and multiplication of fractions |
| dot sketch | an array of small circles that is used to represent a fraction, to find equivalent fractions, to multiply fractions, and to show combinations |
| mixed number | a number that is made up of a whole number and a fraction |
| fractions that add to 1 | two or more fractions that have a sum equal to 1 |
| common unit | a unit that quantities have in common so that a calculation can be performed on them |
| unlike things | two or more quantities that do not have a common unit |
| common denominator | a number that may be evenly divided by each of the denominators of a given froup of fractions |
| intersections | the places where lines cross in dot sketches used to show combinations |
| fraction of a set | a fraction of a group |
| fraction of a fraction | a smaller part of a fraction where the larger fraction represents the whole |